Jack The Tripper 

When high on drugs, the act of tripping and hallucinating extreme visions of murdering people (normally women in questionable lines of work).

"Why is Ben cutting the floor with a plastic knife?"
"I think he's done a Jack The Tripper, innit.."

Jack The Tripper by C L G June 3, 2018

Jack the Tipper 

Noun: A guy who leaves a dollar per person on the table, no matter the amount of the bill.

After providing three hours of exceptional service, Shep was horrified to learn that Jack the Tipper was the host of that night’s party of twelve.

Jack the Tipper by Dorkmuffin May 2, 2019