Lambda pants 

Alternative term for Y-fronts. The shape of the fly, although resembling an upside-down 'Y', actually looks more like a lambda symbol (the right way up).

I'm wearing my best lambda pants for my date tonight - I hope she likes them. At least the skid marks won't be too obvious.

Lambda pants by Funkmaster74 November 26, 2010

Piss-Pants Funny 

The Act of Something or Someone being in the State of Such Concentration and Hilarity, That they have an Involuntary Eruption of Urine; To the Effect that their Pants are Completely and Utterly Soaked in Their own Urine.

"Mitch Hedberg was Piss-Pants Funny!"
"Dude, That guy Falling down the Stairs was Bad, But Piss-Pants Funny."
Man, Yo Momma is So Ugly, She's Piss-Pants Funny..."

Piss-Pants Funny by TheLaughsOnUs April 21, 2011

Shwat Pants 

Pants that are worn so often, and are so comfortable, that they've been sweat in, shat in, and have soaked up swass on multiple occasions.

Could also be described as sweat pants on steroids.

Scott: Dude, you just spilled your nachos and beer ALL over your pants!
James: No worries bro, these are my shwat pants, they've seen a lot worse!

Shwat Pants by JettSkyler May 5, 2011

flud pants 

pants that ride up at least 4" higher than a man's ankles. people who don't want to buy knew pants often wear old pant which look like fluds.

Wow look at Jimmy he looks like such a tool with those flud pants!

flud pants by andrewd126 November 6, 2011

blue pants thursday 

Blue pants Thursday is a thing for sailors only. Meaning on Thursday we wear our blue pants;) (only if your a sailor thou)

Blue pants Thursday

blue pants thursday by Oliviamarie_7 September 16, 2013

Cozy Pants 

Dress pants that are specifically worn on those days where you feel lazy/tired/too fat, but yet want to look professional at your workplace.

Thank god I wore my cozy pants, cause my waist grew two inches after that last meal.

Cozy Pants by The Great Turbanini May 15, 2014

Thanksgiving pants 

When you shit your pants after thanksgiving giving dinner

I think I have thanksgiving pants

Thanksgiving pants by Bj.noggy February 15, 2017