Once again while I was watching a movie in English I heard a couple of expressions which I didn’t understand. One of them was
I swallowed a bug
Here is the contest I heard it in:
Two guys were talking to each other at the pub, one of them was swearing when a girl come along to talk to the other guy.
So when the guy who was swearing realized she heard him, he said: I swallowed a bug… and took off.
I’m pretty sure it is something to do with the fact that it was swearing.