A tranpa is a male trans person that has grandchildren.
Timmy: Your old tranpa

Mother: Be nice to your tranpa Timmy
by MilkyRocket February 26, 2019
Get the Tranpa mug.
Elder transvestite. Also can go bg tranma for female gender.
Hey tranpa let's go get some ice cream.
by Viva la kam December 7, 2019
Get the Tranpa mug.
Rhis is what the kardashian grandkids would call granpa Bruce aka Caitlyn Jenner...a former shell of a man who transforms himself into an "woman" and lives their lives as such.
Hey tranpa, can we go to the track and run a decathlon in heels with you?
by Notyouraveragedude February 12, 2016
Get the tranpa mug.
It’s basically a continuation of “ur granny tranny”which is used by a few virgins because they don't know what it means
Carl: your mum gay

Gary: your granny tranny

Carl: your grandpa tranpa

Gary: *dies*
by Bich "Phuc" Dat July 3, 2018
Get the your grandpa tranpa mug.