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1 definition by ainsy1987

- verb or noun. The act of spontaneously vomiting while urinating, often as a result of prolonged over-consumption of alcohol (a contraction of 'chunder' and 'piss').
"How was last night?"
"Well, I drank at a fairly unsustainable pace for several hours and then ended up chissing myself."

"Why does your cock smell of vom?"
"Must just be a bit of splash-back from the chiss I had before."
"Haha, bring it here then you bloody chiss-head."
by ainsy1987 May 16, 2010