An action which is done when one needs to go to the bathroom to take a huge shit because of an upset stomach, but then have to throw up at the same time. Because of that, the person has to sit, shit, stand, turn, hurl, and repeat depending on how many cycles it takes not to get any shit/vomit on the floor.
Person 1: Fuck dude, I had that shitty spicy Mexican food yesterday and ended up doing the Bathroom-Boomerang in your bathroom. Sorry about that.
Person 2: Dude that's fucking disgusting.
Person 2: Dude that's fucking disgusting.
by Nexyl November 24, 2016

Charging Christmas presents for your parents to a credit card they pay for.
"Thank you for the gifts they are so nice."
"Your Welcome. Its all boomerang money anyway."
Also "treating" your roommates to pizza or beer with money they left out on the counter earlier and you claimed.
"Thank you for the gifts they are so nice."
"Your Welcome. Its all boomerang money anyway."
Also "treating" your roommates to pizza or beer with money they left out on the counter earlier and you claimed.
by HNZ December 8, 2010

I took a big shit the other day and i was wiping my ass when my hand slipped of the toilet paper and I was shit boomeranged!!!
by Speekstick43 April 21, 2014

by Mr. Clit June 11, 2006

A strange Austrailian woman, with magical powers. Often has a lisp, may be seen using the words "Bonza Sweetie" Stay well away. Has latley been made into a cbbc program.
"fuck me dude... U cath last nights episode of Aunt Boomerang??"
"yeah, was Bonnnzzzzzaaaaaaaa"
"ahhaha wicked! BONNZZAAAAAA"
"BONZZZAAAAAAA"
"Ooof"
"yeah, was Bonnnzzzzzaaaaaaaa"
"ahhaha wicked! BONNZZAAAAAA"
"BONZZZAAAAAAA"
"Ooof"
by Christian October 3, 2003

Only possible when prevailing air currents are transferring air from your ass to your nose...Breaking wind when not respecting the environmental conditions results in a Polish boomerang.
The other day I was laying in bed with the fan on and had to fart...Little did I know I was about to launch a Polish Boomerang.
by Joe666_69 July 28, 2011

by mr. stress October 25, 2017
