Daylight Fuck

Someone that you would have sex with in the morning.
Someone who is cute enough in the daylight to have sex with.

Could also be someone that you would have sex with with the light on when you're sober.

-I can't believe I hooked up with the guy last night...at least he was a DLF.

-what's a DLF?

-it's a daylight fuck. You know, someone who you wake up to in the morning and they still look cute enough to to have sex with in natural light.