Be chasing (one's) (own) tail American British verb phrase
Used when someone is busy to do a lot of things but achieve little and do not lead to progress
I have been chasing my tail all day, but I haven't finished any tasks.
Used when one wishes to engage in sex with someone
They admitted that they were chasing tail in the bar last night.
The verb "be" should be conjugated according to its tense.
1. To punch a hole in one's ticket to show that they have paid for a ride
2. To do something that allows one to go further in a competition or to be promoted at work
1. Please, tell me if I forget to punch your ticket.
2. With a view to punching my ticket to the final, I did whatever it takes to win this round.