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when two males rub their assholes against each other's until it friction welds them together
wanna buttweld before class?
buttweld by mostfaded January 13, 2026

Butt weld 

The act of ejaculating in your partners ass crack, and giving the cheeks an almighty clap together to seal the deal.
"Having a dirty one with the missus and the full time celebrations may have got out of hand when I went and gave her the butt weld."

buttweed 

A nonsensical word to be used as an insult around children, in place of a harsher word.
Dadgummit, that buttweed just pulled out in front of me! Rats!
buttweed by Joe Bod August 1, 2010

buttweeder 

A cosmetician who specializes in completely removing hair from the pubic and butt-crack region, also known as performing a brazilian wax.
Susie prepared for her hot date with a manicure and a visit to the buttweeder.
buttweeder by Makooka December 20, 2010

mexican buttweed  

Its that gross shwag that has spider webs in it and shit. It smells bad, not even like weed something more like dirt and its usually also in a shitty bag. You can smoke mad blunts and wont even get high. Its is rumored to actually be shipped out of illegal mexican butts.
Eww dog fuck this "mexican buttweed". Ive smoke 3 blunts of this mexican buttweed and still not high.
The male penis, specifically when used to penetrate anothers anus.
BOB: John, I dropped the soap. Will you get it for me?
JOHN: Yeah, I got it man. (Sproing) What? What the fuck is that shit?
BOB: Oh, sorry, it's just my buttwedge.
buttwedge by kingmarki December 10, 2006