On IRC, the act of using a (in most IRC clients) built-in command to slap another user. Frequently used for comic effect.

The only time a Singaporean is capable of forming a complete English sentence on IRC

1. The act of bludgeoning someone or something with a trout.

The act of slapping someone - usually across the facial region - with a wet penis or a representation thereof.

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.

The act of beating someone or something about the head or head-analog with a large trout or other large fish. Often done in response to them saying something stupid.

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!