daydrinker 

One who is a sloppy, drunken mess in full debauchery by mid afternoon.

Marin, Christina and Moses were downtown yelling profanities in the middle of the street at two o'clock in the afternoon... Fucking daydrinkers.

daydrinker by The Gooders February 8, 2015

Daydrink 

Quite simply the act of drinking during the day. It could mean drinking during the day on the weekend (if you are employed), or weekdays if you are not employed.

Brian: What's the plan this weekend?

Tom: Daydrink all day, all weekend!

Brian: I love it! I daydrink all the time!

Daydrink by freedom17 August 1, 2012

DAYDRINKIN' 

The drinking of alcohol when the sun is in the sky. Commonly used in communication between two friends who wish to have a casual drink in the sun. Search Twitter for 'DAYDRINKIN' for a lot of uses.

"DAYDRINKIN' with friends in my backyard",
"Hey man, wanna go DAYDRINKIN'?",
"This really is a DAYDRINKIN' kinda day".

DAYDRINKIN' by kev2480 April 26, 2013

Daydrinking 

verb, Consuming alcohol alone and/or in a dive bar during "business hours" for the sole purpose of getting a buzz or recouperating from a hangover. Usually performed with the shades drawn.

"Hey Tyrone...what's up with the mirrored shades and the moosebreath? Have you been daydrinking?"

Daydrinking by nwbadger November 13, 2007