Sarcastic response, usually aimed at twats (eg. pool king)

When a shit joke is cracked, "tchyeah" is the most effective way of making them feel smaller than a ginger's penis.

Can also be used when someone is bullshitting, or randomly when you are pissed.
"Ere lads, I've got a well funny story for you..."
"TCHYEAH!"

"I shagged this well fit bird last nite..."
"TCHYEAH!"

"That'll be £2.20 please mate"
"TCHYEAH!"
by kirkham November 24, 2003
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To say "yeah" and "fuck off I am not at all interested" in two swift sylablles
"But nottingham forest are so cool!"
"Tchyeah!"
by Fred Ferrari November 24, 2003
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