ass-tacular

is an ass that is better than all asses in the land.

DAMN girl your ass looks ASS-TACULAR in that thong.

pimp-ass-tacular

It is when something is better then pimp, better then spectacular, and better then badass, so you combine them together, and you get pimp-ass-tacular

Hey, did you see that concert last night?
Ya, it was pimp-ass-tacular