My attempt at an exegesis, as it looks like it's the sport of the moment:

"I too¹ had a chance at [random game]. After half an hour², I found myself 400 [satoshis] in the red³. [Random rant follows]."

¹ slang from "2".
² probably because he's a bit slow, this may mean a couple of rounds.
³ meaning he lost 400 satoshis.