CONFUSED! Need help...... (mild spoilers)

I am not sure if its only specifically used in Australia as in our country we are using the American English as our second language. And for most gay films that I had watched *beep* means to penetrate. But in this movie, it seems that it only applies to hetero *beep*

I mean there are a few instances in the movie when the term *beep* was used to mean TO RECEIVED which is the opposite of PENETRATE.

Here are few of the instances:
1. When Midget and Cass was talking about Cass past experiences with his teacher, he told Midget that he never *beep* the teacher. In this situation, Cass meant that he was never penetrated by the teacher. As he was the one penetrating made clear when he was talking to his parents near the end of the movie.

2. When Midget and Cass was talking before his parents returned, Midget told Cass that he (Midget) *beep* him, but in their sexual encounter it was Cass who was penetrating him.

3. In the last scene, Paul asked Midget if he can *beep* him, but I am almost sure here that he (Paul) wants to be penetrated. This very obvious as when Midget and Paul was talking in the party, it was clear that Paul is of the receiving type from their conversation.

there might be a few more scenes when the word *beep* was used in this movie to mean to receive the penetration, so anyone else confused by the different (opposite, in case of how I am used to understand the word) meaning? Or is this how it is used in Australia? I hope someone can clarify this for me, thank you.