What is an adult matinee?

Answer 1

this may not be right but this is what i found out

a matinee is an entertainment esp. a dramatic or musical performance, held in the daytime, usually in the afternoon.

if that's not right sorry....

Answer 2

A matinée is an afternoon performance of a film, play or concert, often with cheaper seats than the evening performance. It can also be a midday social event, such as a midday dance.

Answer 3

some sort of movie theatre slang