look up any word, like the eiffel tower:
A tight ass.
a) resulting from being in a tense or pressured situation
b) being uptight or generally harsh
Mike is totally sphincter tight about his job review.

Dude, my dad is being completely sphincter tight about letting me use the good car Saturday night.
by todh November 06, 2007

Words related to sphincter tight

harsh nervous pressure uptight wound up