to man up, to make a heroic effort, a reference to weightlifters and gymnasts putting chalk on their hands before sticking the landing, lifting 900 lbs., to win a gold medal
Can be used in a number ways and have varied meanings.
1. To pull a chick
2. To get something for someone 3. Going out/tuning a girl
1. "Did you chalk up that chick last night?, she was toe"
2. "Oi, chalk us up a beer can ya?"
3. "Yeh I'm chalking her up these days", "I've been chalking her, but I'm not getting to far"
Basically a way to say your down to do something, or participate in something. You can also chalk yourself up as not down to do something. Imagine someone tallying up yes's & no's, and you're chalking yourself up for one or the other.
Kristoff: "So is Sangria Night still happening or what?"
Meghan: "Pssh, the fuck if I know, you're the one bitching about being hungover still, pansy."
Kristoff: "Hey now relax. Chalk me up for Sangria Night."
Meghan: "That's the spirit."