I’m sitting in Obrycki’s on Concourse B at BWI. You know, the place that used to be a Baltimore crab house but now is a spot to grab some Maryland-themed airport food.

I’m wondering why I paid $32.99 for a warm crab salad on a hotdog bun when I start to notice my fellow travelers, the ones who chose to fly on the Thursday afternoon before a long holiday weekend.

All I can say is that they confirm my suspicions. BWI Thurgood Marshall Airport, the easy-go, easy-come airport, is for slobs.

Cut-offs and old T-shirts, ratty khakis, and I spy a few pairs of pajamas. Athletic shorts. Leggings and jeggings, what’s the difference. Some ripped, all looking very, very comfy.

It’s good to be among friends.

Traveling comfy is the smartest thing you can do in a world where you have to partially disrobe for air transport.

I blame the Transportation Security Administration for the slobification of BWI.

I’m not wearing a belt. I like to think I’ve lost a few pounds. But I know that I’ve just stretched out these blue chinos and they sag without the aid of a leather cinch.

Better to tug up than have to go through the ignominy of pulling off my belt, in addition to taking off my shoes (an ever-lasting shoutout to you, shoe bomber Richard Reed, wherever you are).

The agency charged with keeping us safe in the air doesn’t have a dress code for travelers. It has recommendations.

“Loose fitting or bulky garments and head coverings may be subject to additional screening to include pat-down screening.”

Slip-on shoes are best. “So yeah about those slip-on shoes,” TSA says on its website. “Avoid the cold floor and wear some comfy socks! Make sure you leave the holey ones at home!”

Props to the advertising genius who bought space for SKECHERS® Hands Free Slip-ins™ just above checkpoint A. As I bend down and tuck my heels into my beat-up canvas sneakers, they suddenly seem like a good idea. Maybe I do need a $60 pair.

There were no ads for clutch purses. They look too much like a weapon.

“The clutch is cute and all … and is probably ideal for a blind date … but it is still considered a prohibited item,” the TSA says.

Southwest Airlines shares the blame for the slobardization of BWI.

I’m wearing long pants on a hot August day, 84 degrees but freighted with enough humidity to bake it like it was 99. That’s because no matter how warm it is outside, I know the recirculated substance Southwest wants me to believe is air will be frigid once we’re airborne.

If we stay on the ground very long, I’m screwed.

Sitting in an aluminum-titanium hotdog cooker, otherwise known as a Boeing 737-700, waiting for takeoff can make you feel, well, cooked.

Southwest is supposed to be the fun airline, the one with a kicky can-do spirit. It carries more passengers than all the other carriers combined at BWI, except when their computer system goes down. Then it carries none and the hot-dog cooker ratchets up to sizzle.

The airline reserves the right to turn you away if you show up wearing clothing that is “lewd, obscene, or offensive.” No open-toed shoes, thank you very much.

It’s all spelled out in that teensy, weensy lettering on the back of your ticket and on the website.

“That is correct — no official dress code outside of what’s in the Contract of Carriage, which you listed,” Southwest spokesperson Chris Perry wrote in an email.

So, they have a policy. Do they ever enforce it?

This little piggy went to Vegas. This little piggy went to Atlanta. This little piggy went to Louisville. And this little piggy ...

I stopped counting toes after 300.

“It’s not at all often an issue,” Perry added. “Thanks.”

Other airlines up the ante.

A United Airlines ticket requires passengers to be “well-groomed, neat, clean, and in good taste.” Passengers can’t wear attire that is disrespectful to other passengers.

Spirit Airlines, “Less Money, More Go,” spells out a number of things that won’t fly.

“Torn, ragged, slashed, dirty, frayed, low cut, skimpy, or revealing clothing” are out. So are “offensive or sexually oriented inscriptions or messages,” “halter/tube/midriff tops,” “beach or swim wear.” No flip flops.

It makes me think maybe they’ve had more experience with this sort of thing.

“It’s a good idea for travelers to check with their specific carrier for the specific guidelines,” said Jonathan Dean, communications director for BWI.

One of my seatmates in the very back row of my Labor Day weekend flight was wearing torn jeggings, or they might have been leggings, and a loose-fitting T-shirt.

I don’t want to sound like a snob. Whatever you wear, it’s more important that you take ownership than what I think.

Talking about you, girl a dozen seats ahead of me. You go right on and wear those black short-shorts, tube top and purple lipstick with pride.

Fifty years ago, people dressed up to fly out of BWI. You knew, sooner or later I was going to bring that up. Just don’t get the idea that everything was right with the world back then.

Porkpie hats and London Fog jackets might look cool in black and white photos, but that look was often complemented with hat hair and Frank Sinatra long-weekend glazes.

Me personally, I carry a backpack when I fly.

I use it to carry my shoes, wallet, belt, keys, pens, laptop, tablet, car keys and notebooks as I go through screening. It’s my under-seat stash of things that make me feel comfy.

It’s the flag for the forces of slobidization. More than anyone else, I blame us.