This is an urban term used to imply that you plan to beat a person like there mama. Although, the person saying this phrase is not related to them.
by Urban Jack August 25, 2010
Get the uncle sister mamamug. by The lábinator January 9, 2020
Get the Your sisters moustachemug. It is almost As worse as ur granny tranny, but instead the Sun moves close to Earth not the Earth closer to the sun
by NOOOREMALISS March 15, 2018
Get the Ur Sister's a mistermug. Oh my my. Sister Kait will take all your mans in a snap. She is trendy and she will never let any of her friends be upset so she will make them laugh until they pee themselves. Watch out, sista kait is coming after you. PS. she is boy crazy and if there is a cute boy she will find out where we lives, his cats name and even his great grandfathers 2nd fish's name is. So please, don't mess with Sister Kait. She loves billie eilish and she will cry if she is listening to her for too long.
"Omg! There is Sister Kait again with my man. She just needs to chill!" Sister Kait is an amazziinngg singa!
by sistersisisisisislol November 20, 2018
Get the Sister Kaitmug. The insult that’ll bring even GOD to his knees, this is the worst insult of all time and will call upon the gods of pain and roasts once said.
Person 1: Yo granny tranny
Person 2: stfu yo sister a trap
Person 1 starts screaming as he melts, and is banished into the void for eternity
Person 2: stfu yo sister a trap
Person 1 starts screaming as he melts, and is banished into the void for eternity
by h a l l e l u j a h April 4, 2018
Get the Yo sister a trapmug. 
by gmoney2904 December 8, 2017
Get the Texas Sistermug.