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

Bum Tipping 

v.

A recreational hobby common among rural students attending college in the city. It is viewed as an acceptable alternative to cow tipping when no cows are available. Under cover of darkness, students sneak up on an intoxicated bum and upend either the bum, the bum's shopping cart, or both.

"Dude we went bum tipping last night; it was just like tipping cows back home, only with more noise!"

Bum Tipping by Ladderwalker February 4, 2009

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