(as) sure as eggs (is eggs) British old-fashioned phrase informal
Used to say that something is certainly going to happen
He'll recover soon, as sure as eggs is eggs.
If you don't study hard, you will fail the exam. Sure as eggs is eggs!
Meaning absolutely certain or without a doubt
Another way to say "absolutely", "definitely" or "for sure"
That's absolutely right.
Totally certain.
With absolute certainty; decisively
It might be changed from the phrase " as sure as x is x".
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.