Buttholder 

a) someone who holds your butt when you aren't using it
b) underwear

I got an awesome new buttholder.

Buttholder by avrilanche March 27, 2011

ButtHoleCockPenis007 

The best phrase used by class 20-007 to get the attention of the cock guzzling thunder cunt cadre who snoop on students by video and undermine instead of training, coaching, and mentoring.

ButtHoleCockPenis007 is why our adversaries will win the counterintelligence fight!

ButtHoleCockPenis007 by TJ is a dirty pirate hooker September 24, 2020

Bigfoot Butthole 

When a chick's asshole is packed and overflowing with crispy, long, pubic hair.

My boy Wagz was banging this Indian chick and when he flipped her over to hit it doggie, he was taken over by her Bigfoot butthole.

Bigfoot Butthole by JStackz June 8, 2017

Butthole Cancer 

Butthole Cancer is another way of referring to anal cancer. Anal cancer is a type of cancer that occurs in the anal canal and the anus. It is a rare disease among the general population, but is very common among gay men. Along with that, infections like HIV and Syphilis are also very common among gay men.

Gay men who don’t have HIV are over 20 times more likely to get anal cancer than the general population. Gay men who DO have HIV are about 100 times more likely to get anal cancer. Rates of anal cancer among gay men have been increasing every year.

This is because gay sex often causes anal fissures or tears. The anus is supposed to remove waste from the body, and having gay sex will eventually cause tears and cuts to the anus. These tears can get infected.

If you're a gay man, then your chances of getting infections and diseases like HIV, AIDS, Syphilis, and anal cancer (or butthole cancer) are quite high.

Butthole Cancer by Medical School October 18, 2019

keep it on the butthole 

To keep secret or private; possessing information or material that is confidential, only to an individual or select few, and must remain that way.

Popularized in late 2020 Western New York during the COVID-19 pandemic.

I don’t think we should tell Anthony about this. He has never been able to keep it on the butthole with anything. If I know that guy, he will tell everyone and their mother.

keep it on the butthole by z.e.M.D December 16, 2020

Spontaneous Butthole Evacuation Syndrome 

Some people's buttholes just fuckin fall off randomly. This happens a lot in Norway.

I was diagnosed with Spontaneous Butthole Evacuation Syndrome

Spontaneous Butthole Evacuation Syndrome by The Gulath Clan March 7, 2019

werewolfing a butthole 

When you're about to eat out someone's ass, you spread their ass cheeks, exposing yourself to their full moon, and you throw back your head and let out a howl.

You know how Rigby would like to start the night?
By werewolfing a butthole.

werewolfing a butthole by Cyrano515 November 21, 2016