Der IRC-Client mIRC führte ein Slap-Kommando ein – im Chat stand dann, dass der User den anderen mit einer großen Forelle verprügelt. Nunja. Wiktionary schreibt hierzu:
Etymology
From an Internet Relay Chat program, mIRC, which includes a /slap command that caused a message to appear that „slaps around a bit with a large trout“.Verb
trout slap (third-person singular simple present trout slaps, present participle trout slapping, simple past and past participle trout slapped)(Internet slang) To strongly or humorously rebuke or humiliate.
Wiktionary
Prompt: People slapping each others with large trouts, hyper realistic