Bishin' out
A saying started in Auckland, New Zealand, now used throughout the English speaking world to describe a lad who makes outLADish claims and 'Bishes' out of providing evidence. Claims usually, if not wholly, in reference to females.
"He said he fucked a girl, but he bished out"
Mate 1: I thought he was going to see a chick
Mate 2: Nah, I heard he was bishin' out
Mate 1: I thought he was going to see a chick
Mate 2: Nah, I heard he was bishin' out