Winks

You can find the answer here.

somebody care to explain this idiom? i can't make sense of this.

i got it. it's hard at first because i understand wink as closing one eye for a second. so it doesn't make any sense since nap/sleep require both eyes to be closed.

What is these numbers for
Explain please am curious

Language doesn't always follow any obvious logic. Anyhow, Tdol posted a link to an explanation. (Don't worry. Be happy.)

Try this: https://en.wikipedia.org/wiki/Forty_winks

How about taking three sleeping pills?