When too many women are willing to have sex with you, most of those women catch feelings and won't let you be with any other women.
Damn man, he gets all the women, but he better be careful he doesn't get The O'Hara Brother's Disease, or else he could be in a whole world of hurt.
by Fridge547 April 28, 2017

When one takes a dump onto a bed prior to engaging in sexual intercourse with one's partner on top of the soil without the partner knowing.
Henry: Dude, I'm about to get laid but I really need a shit. What shall I do?
Harry: Just be her Undercover Swedish Brother!
Harry: Just be her Undercover Swedish Brother!
by yes!yes!yes! March 20, 2014

1.Someone who breaks up with their boyfriend so they can date his brother instead
2.Someone who uses a guy cuz they want to make his brother jealous
2.Someone who uses a guy cuz they want to make his brother jealous
by starr48 May 25, 2016

This is a term worse than "ur mom gay", "ur dad lesbian" , "ur granny tranny", or even "ur sister a mister"...
This should only be used a last resort and using this term liberally may cause the end of humanity
This should only be used a last resort and using this term liberally may cause the end of humanity
Greg: "ur mom gay"
Dave: well, "ur dad lesbian"
Greg: shit, well then that means "ur granny tranny"
Dave: "ur sister is a mister"
*Universe implodes, leaving Dave And Greg on a floating rock in space*
Greg: you pushed me too far
Dave: don't you dare say it i swe--
Greg: "ur brother a mother"
*entire quantum-verse crumples, releasing radioactive materials that prevent and form of human life from existing for the next century*
Dave: well, "ur dad lesbian"
Greg: shit, well then that means "ur granny tranny"
Dave: "ur sister is a mister"
*Universe implodes, leaving Dave And Greg on a floating rock in space*
Greg: you pushed me too far
Dave: don't you dare say it i swe--
Greg: "ur brother a mother"
*entire quantum-verse crumples, releasing radioactive materials that prevent and form of human life from existing for the next century*
by SavageSpaghettiSixtus May 12, 2018

by Shivguy4u March 29, 2021

Dan:Ur mom gay
Carl:No u
Dan:Ur granny a tranny
Carl:Ur brother a mother
*the whole Milky Way collapse*
Carl:No u
Dan:Ur granny a tranny
Carl:Ur brother a mother
*the whole Milky Way collapse*
by Baz ball May 11, 2018

A type of sibling that sucks to deal with. They scream loudly and always ask you to do their schoolwork. Younger or older they suck. If you don't have a brother you are a luck master.
by CharBit January 9, 2024
