Top Definition
A secret, rapid-fire, language that only Twins know how to speak.
Twin 1: Ohmygod!Howhaveyoubeen?Ihaven'tseenyouinages!What'supmymostbelovedsibling? *glomp* <3

Twin 2: Kyaaa!I'vemissedyousomuch!Hasitreallyonlybeenaweeksincewelastsaweachother?!

Innocent Bystander: Christ on a cracker, my brain hurts. They must be speaking Twinlish...What the hell are they saying?!!
by DarkLaugh January 18, 2011

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