Bumswirly 

When a finger is inserted into the anus and swirled around to create pleasure. The sensation can be enhanced with the use of a makita impact wrench.

Jake was having trouble orgasming so decided to give himself a bumswirly

Bumswirly by BumswirlyBoi December 9, 2018

Bumwilly 

A gratuitous term for anal sex often used by primary/early secondary school age kids descriptively or as a form of insult.

Can also refer to toadying, sycophantic behaviour in much the same way as brown-nosing or arse-kissing.

Example 1

Kid 1: 'Why were you and Mike in the toilet together?'

Kid 2: 'Dunno'

Kid 1: 'err, bumwilly!'

Example 2

Kid 1: How come Mike got that new PS3 with 5 games?

Kid 2: 'Must have been having bumwilly with his Step-Dad'

Bumwilly by Lord Manhammer July 7, 2009

BumWilly 

A bum willy is a term used for a man who has a below average cock size of 4 inches, where the woman feels the need to stick it in her bum as a last resort for any sort of feeling or pleasure during sex.

“Oh god I met a guy last night who had a Bumwilly the sex was abysmal.”

“I need to find a guy with a Bum willy so I can have comfortable anal sex.”

“The sex was so mediocre last night I had to stick it in my bum.”

BumWilly by The Bum Willy Connoisseur May 14, 2020