When you travel, what kind of vehicle do you use?
carry a chip on one's shoulder
He is very difficult to deal with...he's always carried a chip on his shoulder about his lack of education.
Don't mention it!
A: Excuse me, can I use your telephone?
B: Of course. Go ahead.
A: I'm sorry to bother you. But my phone hasn't been installed yet.
B: Don't mention it. You are welcome(at any time).