Barney: Why are you trying to ruin my life?
Abby: You slept with me and then you never called me again.
Abby: That's it!
Barney: That's it? As far as I'm concerned, if I leave you safe on dry land with adequate transportation home, you've got nothing to complain about.
The slaps shown at the beginning of this episode, are from episode 3x14 "The Bracket".
Barney slept with Abby in episode 3x13 "Ten Sessions".