get off one’s bike—(Austral., NZ sl.) get agitated or annoyed:
- “I tell you I saw no-one.” “Don’t get off your bike, son. I know you’re tellin’ lies.”
get on one’s bike —(coll.) start making an effort to do smth.:
- With rent to pay and a wife and baby, I had to get on my bike.
Note: The expression does not correlate in meaning with the phrase on your bike—(UK) used to rudely tell a person to go away (and stop being annoying ):
- There’s nothing for you here, mate. On your bike, then.