mother f'er

a person who only has sexual relations with women that have birthed offspring.

wait, didn't she just have a kid like a month ago? you mother f'er...

mother raper

When someone from Alabama notices his mother is passed out on the couch drunk and decides to take the opportunity to rape her. Commonly used as a form of revenge when your brother steals "your girl". Usually occurs in a trailer park.

Bruce: Hey Tim...looks like mom is passed out drunk again!
Tim: Great, nows my chance!
Bruce: Shut up you 'Mother raper'

Mother F'er

A Mother Fucker

I hate you! Your Mother F'er!

Mother Fucker

Someone who mother fucks

This mother fucker just mother fucking mother fucked my mom in her mother fucking asshole.

mother theresa

cunty bitch

Cassie is being such a mother theresa today.

mother fucker

A Step-Fater. One who fucks his step sons mother.

My Step-Father is fucking my mother. Hence, he is a Mother Fucker.

mother fucker

Some one who fucks their Mother.

"dude, last nite i was a mother fucker."