chunderpants 

Underpants or panties which are never washed and worn until bodyrot sets in and removes them from all existence.

She peeled off her ragged dress and I reeled at the sight of her filthy chunderpants; monkeys keep their cages cleaner.

chunderpants by Nubba the Wandering Minstrel April 17, 2007

chundercats 

the chundercats are a super elite group of dumb bitches who go out drinking everyweekend and end up puking, falling and getting in people's faces all evening. The events of the evening are usually discussed and laughed about the next day with the other dumb bitches whom they work with.

Bill (to Steve): Hey I invited Becky and her friends over on Friday to drink with us before we go out.
Steve: dude! I don't want those hookers in our house! they're fuckin Chundercats!
Bill: yeah I know, but they are also the dumbest hooers we know and they may do somethin strange for a little piece of change
Steve: Fine, but when they Chunder, and they will Chunder, you are cleaning that shit up.

Chundercats (upon arrival): (raising their swords of power) Chundercats. HO!

chundercats by shiteater9000 April 14, 2010

Thunderpants

A name given to an artical of clothing for people who fart very loud or have very bad gas.

"Stay away from Jim, he's wearing his thunderpants today."

"Thats what that retch is?!"

Thunderpants by bimmerjim May 13, 2005

Thunderpants

When a loud poot is muffled in your underpants.

Meg is clearly wearing thunderpants today, and it smells like satan's balls.

Thunderpants by Stacee2.0 September 13, 2015

Cumderpants 

A soiling of the underpants resulting from a wet dream or accident during a lap dance. Common amongst teenage boys.

Bob had a wet dream so his mom had to wash his cumderpants.

Cumderpants by Schillbj April 20, 2009

Thunderpants

A person who makes a display of farting loudly, or trying to fart as loud as possible, perhaps by lifting one leg and wincing as they do it(Usually a male practice, of those aged about 14 to 20.

Hey, Thunderpants, cut it out man, my mom's downstairs and she will think I did it.

Thunderpants by Snodgrass December 19, 2005

cumderpants 

cum or vaginal discharge on your underpants due to general horniness and presense of an active teenage vagina.

"Hmmm, should I wear Olivia's Bratz underpants or my cumderpants?"

"Your cumderpants. You don't want uneven flap disease."

cumderpants by i love bj March 25, 2010