When viewed in a rear-view mirror, spells EAT IT, a variation of 3MTA3, which when viewed in the same way spells EAT ME, originally pictured on the Beastie Boys album "Licensed to Ill."
I applied to the DMV for TITA3 but was turned down because of it being deemed profane.
As in "Google it," "Tube it" refers to look for something on YouTube.
#1: I'm looking for a demo on how to tie my shoelaces.
#2: Tube it. They've got everything on there.