A trout slap can also mean a gentle tap, as if you just caught a bigger trout than your friend and you wanted to tease them with a little slap. Or maybe you're just wasted and cant stop hitting your friends out of love 'cause everything is just SO funny!
Megan continuously trout slapped Sarah throughout the evening as they danced and partied the night away.
The act of tapping or slapping the head of ones penis on the pubic region of a female including but not limited to: the Prepuce, Clitoris, Labia Menora, or Labia Majora. Derived from the sound a struggling trout makes while flopping around on land. One can replicate the sound of a trout slap by taking their index and middle finger and striking them across the palm of the opposite hand repeatedly.
No man, I didn't get it in... I just trout slapped her.