Doing a Batista is when someone is circling around something and can't catch it for some odd reason. The source of this expression comes from the game Rocket League when a famous player - Batista - tried to catch a boost for a long time.
I can't help you, because I'm doing a Batista at this boost.
someone who wears braces and looks like a piranha
"that batista looks they're ready to bite me, they just got braces!"