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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 28, 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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Any kind of sexual-transmitted infection. Often caught when sleeping with various skanks.
Boy A: "I poked Janet the other night"

Boy B: "You fucking moron, I slept with her last week. I told you she was the one who gave me the Fuckbugs"

Boy A takes a trip to the clinic.
by Peaj September 10, 2009
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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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