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2.
When you're on skype/videocall and you can hear someone typing furiously on the other end
"mate i was chatting with Mike the other night and he was thundertyping so bad i could not hear what he was saying"
by rayray123 September 16, 2012
 
1.
Typing extremely loudly on a keyboard. usually when angry.
person typing on keyboard1:*thundertypes*
person2: Dude stop thundertyping, I'm trying to talk on skype
by iamalion100 December 05, 2010