Trivia What is the difference between "May I come in?" and "May I get in?"

[plhbg1]

“May I come in?” is used for asking permission to enter a room. Usually we knock and then say these words. We use the words come in as most of us walk into the room.

“May I get in?”, “get in” is used when we ask somebody whether we can jump into a boat, or a swimming pool, or get into a bus, or into a cab. This is usually not used for getting permission to enter a room, both formally and informally.

Only rarely when somebody is getting dressed we can ask informally “have you finished dressing, shall I get in now ?”