Definitions by Sam the Baker

Ballpointing 

ballpointing slang term meaning your penis gets hard when needing to urinate.

For example in the movie BULLET TRAIN:
Ladybug (Brad Pitts character) says to Maria (Sandra Bullocks character ) He says he needs to find a smart toilet. Maria: Can you hold it? Ladybug: “I’m ballpointing.”

Ballpointing by Sam the Baker September 28, 2022