Testinus 

the action of putting your testicles in someone's anus

"I watched a porno and someone did a testinus"

Testinus by Alex_Speechless February 4, 2021

testitus 

When a person is sick for reasons of missing a test on purpose.

Teacher: Why isn't Jeremy in today?
Student: Oh, he told me he's got a bad case of testitus.

testitus by Like_A_Boss April 10, 2009