Bumkippings 

Is a word made up word to win at Scrabble.

Colin won the game of scrabble by playing Bumkippings.

Bumkippings by Wendy Greer April 22, 2018

bumtipping 

The act of pushing a bum off a subway seat or platform bench

When drunk and bored on the subway, bumtipping will kill some time.

bumtipping by traxy July 30, 2010