bonathon 

An event in which boning takes place on a very large scale, this includes homo or heterosexual relations, but usually homo.

Thom, Jarrett, and I all took part in a huge bonathon last night.

bonathon by Mercedes Benz January 2, 2007

Bonathon 

A group expedition on bikes up to the Cime de la Bonette in Southern France.
Note: Not involving sex in any shape or form, I want to make that quite clear.

Big Al: Guys are you going to come on the Bonathon at the end of the month?

Tiny Tim: You bet your ass!
Fred: I'm in.
Kim: I'll be there
Profession-Al: Try and stop me.
Hulkster: Affirmative

Bonathon by zzwill September 8, 2011

bonkathon 

an extended period of sexual acivity, usually illicit, or an extended episode of intercourse, lasting over several days

Man, I heard they had a bonkathon at the coast last month

bonkathon by Borgia Buddy May 26, 2006

bongathon 

A marathon bong session where everyone brings their own stash. The last person left conscious wins the bongathon, and as a prize, gets to drink the bong water.

I think I won last night's bongathon, but I don't really remember drinking the bong water.

bongathon by fugitive October 4, 2004

Befouled Bonathan

The act of kidnapping and typing up your college roommate in your dorm and pretending they did not return for this semester. Then the captor will torture their roommate through repeatedly zoning out in front of them, going out for late night walks, eating large meals while the prisoner starves, and the occasional blowjob.

Aidan: “Nah, Bonathan isn’t coming back this semester?”
(Later)
Kirk: “Guys I think Aidan’s pulling a Befouled Bonathan again.”

Befouled Bonathan by LargeDavid April 9, 2021

Bonation 

When a man reaches out to a female to donate his boner to her

Reginald: Today we are donating $91,662.00 to the local college

Veronica (hott chic): Can you donate something to me?

Reginald: Hmmm... i do have something i can give you....my bonation

Bonation by gordon83 January 15, 2010

3 hole boneathon 

A sexual encounter when the penis (bone) is inserted into the woman’s mouth, vagina then anus.

Gina enjoyed the 3 hole boneathon I gave her last night.

3 hole boneathon by Maxwell January 6, 2004