A coma-like state of being that occurs after intense Valentine's Day sex. The daze could result from great, hot sex, or simply because your significant other generally holds out on you the rest of the year.
Man A: Whoa Bob, looks like your Valentine's Day went well.
Man B: I tell ya Jim, Sally gave me my first, best, and last blow job of the year last night, and now I'm in a Valentine's Daze!
Man A: That reminds me, I forgot to take the trash out.