Falling asleep (sometimes passing out) after a night of drinking and waking up a few hours later feeling rested and
refreshed.
Very similar to
beauty sleep, except booze was involved prior to sleeping... and last night's memory might be blurry or non-existent.
Antonym:
hang over
Dude, I need to get my
boozey sleep. I got work in 5 hours!
I hate people who don't get hang
overs and have a boozey sleep instead!