A cramp in the sphincter ranging from a light pucker to a full on chute constriction.
A feared person who causes your sphincter to pucker.
A tight wad.
All that diarhhea made my anus cramp, man what a bad proctospazm.
Every time I see that proctospazm it makes me nervous.
That dude didn't pay his share, what a proctospazm.