When you just thought of something.
I just thunked of a way to make this cake.
A chunky thot, a thot that is chunky. Basically a fat thot.
a strangely loud noise that often has an echo
Mr. A: Wat was that loud thunk?
The dirtiest type of sex known to mankind.
"So I thunked all night last night."
"Really? How was that?!"
"No words can explain..."
*thunks is the opposite of thanks, instead of being thankful your saying your not. "thunkful".
*a sarcastic thanks
i hold the door open for megan, but before she can pass through, i let go, and it smacks her in the face.
i laugh ridiculously.... bahahaha
megan replies, "thunks for holding the door".
The sound produced by an erect penis slapping against an object, whether it be the man's own body or a hot girl's face.
He: *THUNK* (penis slaps across a girl's face)
She: OW!!