The combination of being a lazy fucker and the natural process of having a huge stonk on when you wake up.
This magical occurance can only happen after mid-day when one wakes up with a boner
Friend: That was some fun sleep over last night...
Me: Oh yeah, what time is it?
Friend: Uhm.... 12:30
Me: Cool, just so you know, I've got one BITCHIN afternoon glory raging on over here