Zspy
Zac the sexual predator. Originally was zsp, but zspy is a nickname. It was used in the beginning as a way to call out creepy behaviour from Zacs but is now used as a term of endearment.
Person 1: Hey Zspy
Zac: Hey
Zac: *insert creepy sexual joke that makes you uncomfy*
Person 2: OMG Zac, stop being such a sexual predator
Zac: Hey
Zac: *insert creepy sexual joke that makes you uncomfy*
Person 2: OMG Zac, stop being such a sexual predator