When your iPhone autocorrects something you typed into a string of unintelligable garbage.
Text Sent: Hey, I was wondering if Thea he books get tiftwyhe later rosy.

Reply: What???

Text Sent: I was asking if Thea was coming home today, but my iPhone had an iStroke.
by Coosey Junt April 6, 2019
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An istroke is what happens when someone is typing directly on the ipad pop-up keyboard and the resilt is completely incoherent.
(first post)
Tdyy k. Have

(second post)
I meant toda

(what it was supposed to say all along)
Today i have a new plan.

I think i had an istroke trying to post that.
by Teenimeeni March 21, 2011
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