January 20th, the day the Ozzy Osbourne bit the head off a bat. Why don't you join him in the yearly feast.
Dude, did you know that it's national bite the head off a bat day?

No I didn't, I need to break into the bat roost to prepare the feast.

Ozzy didn't bite that bat for nothing you know!
by BatBiter99 May 23, 2023
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To be engaged in a particularly enthusiastic session of pleasuring one’s self by relaxing in a gentleman’s way
Bollox to this, I’m off to thrash the head off the bishop
by Napoleon BonerPart February 06, 2023
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