Peeing for a long period of time because you haven't went in awhile and also have drank ALOT. OR
The intense feeling of your bladder about to explode because you've drank ALOT and haven't went for hours. Especially just after you've been in the movies.
"Sorry I took so long in there, that was a movie-theater pee..."
Mark: "That movie was so awesome! Like the part when-"
Steven: "Hold that thought, I've got to go take a MOVIE THEATER PEE or I WILL EXPLODE!!!"