trans-dar 

The ability to detect transfolk, especially when the identified person is passing. Generally one tunes in to anatomical cues such as hand structure, brow ridge, adam's apple, and hips.

A: Wow, she is gorgeous. Look at those lips...
B: Look at those hands! Girl is setting off my trans-dar. Are you sure you're ok with that?
A: Why not? She is really something. And besides, I have a few things to learn.

trans-dar by Kar in Garage May 24, 2007

Tranq Darting

Banging someone so hard in the ass that you put them to sleep.

"Damn, after that Tranq Darting last night Jimmy is still passed out on the floor!"

Tranq Darting by RogerRayGun July 27, 2016

transdar 

the ability to identify, read, or clock, transsexual and transgender people.

He knew something was different about that girl because she was setting off his transdar.

transdar by ElusiveAppellation June 23, 2011