Having sex with; Sometimes used to imply a secret sexual relationship. Also implying casual sexual relationship.

"Boffing" is a less offensive term than "fucking" and therefore the term boffing is more readily used in polite company.

humping fucking screwing
"No one knew he was boffing the librarian every night on stacks of books."
Or
"Fill my cavity," she yelled, while wildly boffing him on the dentists chair.
by Knightword March 3, 2008
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I was boffing her in the elevator when the doors opened.
by dude_zeon May 15, 2004
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1) having sex ; british term that is making an American debut

2) a sport popular with the geeky male population of Ashland, Oregon which consists of hitting each other with home made weaponry made out of plastic pipes, foam and duct tape. strict rules but a loose concept, fun to watch, mostly a male dominated sport.
1) yeah, i dumped my boyfriend because i found out he was boffing the girl next door.

2) on saturday, my boyfriend goes boffing with his friends. I mean the sport.
by Violent Violet May 21, 2007
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From Tom Clancy's "The Sum of all Fears:" "Honey, I can't tell the President I was late for work because I was boffing my wife across the street."
by El Pyro June 5, 2005
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Bof is slang for “both.” It’s typically used to refer to being both drunk and high. The term was made popular by Gucci Mane’s song, “Both.”
I don’t usually do this unless I’m drunk or I’m high but I’m bof right now.
Yeah, I’m bof!

Scotty: “Did Rick get the spins last night?”
Clark: “Yeah, he got bof.”
by ScottyBugatty February 26, 2018
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1. To have intercourse with a person as if by means of a boff.
2. To expel intestinal gas through the anus; break wind. Especially relevant when said expulsion is silent and particularly potent.
1. Kieran boffed Sarah all night long.
2. Steve boffed in the crowded lecture theatre.
by Kieranishere November 2, 2005
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