A phrase which is said after a joke by an individual who hears it.
The element within the joke that makes it funny, one that someone normally figures out for his/herself, is made obvious by being verbally described by the individual.
Saying this phrase leads to mixed results. Some may be annoyed by it and feel that it ruins the joke. Others may find it humorous because the element is somewhat funny in itself.
John: The early bird gets the worm, but the second mouse gets the cheese.
Friends: <laughter>
Fred: It's funny because... the mousetrap kills the first one.
Friends: <sighing, shaking heads>
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Dave: A guy goes to his doctor for a checkup and the doctor tells him that he needs to stop masturbating.
"Why's that, doctor?" the guy asks."
"Because I've gotta finish this exam."
Friends: <laughter>
Craig: It's funny because... he's masturbating in front of the doctor.
Friends: <chuckles>
The time of day between 11:00 pm to 4:00 am. It is comprised of being on Skype with your friends and screen sharing, collectively looking at random and weird things on the internet, such as cringe and porn.
Aaron: "It'salmost Real Funny Hours!"
John: "God fucking dammit"
The part of the body that your girlfriend or wife possesses that somehow allows her to get offended by something you've said that everyone else in the room finds hilarious.
Wow, that joke that Joe told about the priest, the pianist and the tromboner was great, but his chick is staring daggers at him. He must've hit her So Not Funny Bone.