Two-one-two Edit Meaning

1.

When a woman goes down on her man in a movie theatre and they're the only ones that that row. To someone who's just spotted them, this person would see two heads, then one head, then two heads again, thus: two-one-two

I walked late into my movie and noticed that I wasn't alone, there was a two-one-two going on up in the last row.

See goes, down, go, man, movie, theatre, theater, head, alone, row, last