Testickling 

The act of tickling the testicles and surrounding area.

Last night, Tina was testickling me! I almost kicked her.

Testickling by skullnuku October 8, 2011

Testilingus 

The sexual act of licking the testicles

She's got a face like a steamed haddock but god is she good at testilingus

Testilingus by Speromeliora March 27, 2009

Testillingballah 

Licking of the testicles(balls), often
accompanies fellatio.

She gave me some testillingballah with
that BJ last night.

Testillingballah by The Bald Monk October 16, 2003

Third Testicling 

For those who like to add crude meaning to an otherwise unoffensive term - "third wheeling"

Just like a pair of wheels, a third testicle will stand out, and should not be around(in most cases)

a) Oi, Pete, whose the third testicle?

b) Bobo hooked up with some chick, so i started third testicling

Third Testicling by Third Testicle August 3, 2009

Testicling 

When Jason is laying on his bed with his testicles out. Normally with no pants.

Jason was uncomfortable so he took off his pants and began testicling

Testicling by brotime9 November 9, 2010

Testiculine

The line in a mixed gender conversation that a woman should avoid crossing, in which she veers into topics gentlemen simply dont want to discuss.

"Hey Bill, how awkward is it that every time we talking to Jane she starts discussing her menstrual cramps."
"I know, John, she's always crossing thre testiculine"

Testiculine by Baldirish January 30, 2020