trunkninja 

to get a ride in the trunk of someone elses car, thereby ninjaing your way somewhere else. Done preferably in a van or SUV.

Dude 1: Dude, i had to get a ride from Jenny yesterday but she doesnt have her year, so i had to trunkninja.
Dude 2: Noice

trunkninja by shooooooooooooooooo!!!!!!!!!! October 22, 2008

transninja 

A transninja is a person that is transgender, but you would never know it unless told.

He/she/(preferred pronoun)is a transninja.

transninja by HarmrulLeaf February 15, 2021

Transninja 

A transninja is someone who perfectly imitates the opposite sex to fool or fully become one with the sex. Some transninjas cover it up so well you wouldn’t be able to even no they were trans. Most transninjas hide their birth sex from their partners allowing them to believe that that is who they were.

Shortened word for transgender ninja

I got fooled by a transninja on my vacation in Thailand

Transninja by HarmrulLeaf February 18, 2021