A random physical pain during sex that completely kills the mood.
"I was going so hard with cindy till i got this fukin fuck bug in my ass."
by Vexan Texan August 29, 2009
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A fuck bug is when a group of guys get together preferably in the woods and dig a big hole. One of the men catches a bug, preferably a beetle, and throws it in the hole. Next, all of the men take their clothes off, jump in the hole and try to fuck the bug, but the bug gets away and they just end up fucking each other. Afterwards they all go to the bar and say things like, "I thought I had the little bastard but I guess that was you Hank,
sorry i thought it was the bug..." --- SURE YOU DID.

Items needed for a fuck bug: shovels, small bug, at least 4 naked guys.

Sounds during a fuck bug: oooohh yeahh!!!! come on now! (like a hick would say it) ooohh!!! ahhhh!!! git' on me Jim (like a hick would say it)
There is a fuck bug tonight under the old treehouse at 7pm, can you bring the shovels?
by Matt_ July 10, 2006
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What friends(mostly girls) call a fellow friend who returns the next morning after presumably having intercourse either with a stranger, a fuck buddy(someone who is not your bf/gf & yet you still have sex with them on a regular basis), an acquaintance, or someone you hook up with on occasion but not frequently enough for them to qualify as your fuck buddy.
Good Morning fuck bug.

Where did you end up last night fuck bug?

What did you end up doing last night fuck bug? (usually said with sarcasm & with the answer already known)

Liz is the usual fuck bug of the group.
by Lola J July 22, 2008
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A bug, roughly the size of the average human thumbnail, that upon discovery prompts the verbal response: "oh fuck" by the discoverer.
Q: You see that Fuck-Bug over there? That thing is roughly the size of the average human thumbnail.
A: Fuck.
by seapigeon420 February 6, 2020
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when smoking marijuana, to 'fuck the bug' is to take a hit. when the bowl is cashed the 'bug is fucked'.
dude, its your turn to fuck the bug!
by Jarvis Dimambrosauce June 15, 2007
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totally off your trolley, mad, slightly dangerously insane. Mad. Not right in the Heid.
OH man that friend of yours was totally bug fuck last night
by Big Al'Qa'Ida September 5, 2003
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