A nonsensical piece of slang made popular in a MadTV skit. The joke is that it's supposed to sound like "light in the loafers," but it has no actual meaning.
BC: Hey, check out the shirt Roger's wearing today.
PL: Yeah. Nice shirt.
BC: You know what I heard about Roger?
PL: What?
BC: The guy's a midnight golfer.
PL: What?
BC: He's a midnight golfer -- Roger.
PL: He's a midnight golfer, he likes to golf at night?
BC: Yeah, he's a midnight golfer.
PL: I don't know what you mean.
PL: Yeah. Nice shirt.
BC: You know what I heard about Roger?
PL: What?
BC: The guy's a midnight golfer.
PL: What?
BC: He's a midnight golfer -- Roger.
PL: He's a midnight golfer, he likes to golf at night?
BC: Yeah, he's a midnight golfer.
PL: I don't know what you mean.
by ErikN October 7, 2005
Get the midnight golfermug. Yo, I don't care what you say -- any dude who cries at the end of Brokeback Mountain is a midnight golfer for sure.
by the avi February 2, 2006
Get the midnight golfermug. by Steve January 25, 2005
Get the midnight golfermug. by What Up! January 21, 2006
Get the Midnight Golfermug.