couth up
/ko͞oTH uhp/
Verb: To become polite, or 'watch your mouth,' usually stated as a warning or demand.
Verb: To become polite, or 'watch your mouth,' usually stated as a warning or demand.
(In the presence of a dignitary)
A: I gotta go take a piss.
B: Hey, couth up.
A: I gotta go take a piss.
B: Hey, couth up.