Top Definition
A text message that you send from a wifi hot spot from your smartphone. You would have texted them the normal way but your in a different country at the moment and you can't afford roaming charges. A wifihi conversation is usually extremely short and to the point.
You:"Hey I'm almost in florida for New Years I'll ttyl"
Her:"When did you even leave? I thought we had plans and now your just sending me a wifihi?"
You:"Sorryyy Babe..."
by liamthehotmale December 29, 2010

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