The use of thumbs (hence the th) for typing on a qwerty capable cell phone.
The Blackberry storm may be one cool phone but thyping on it is much harder than on the iPhone!
by Danny Webster February 25, 2010
When some some is thinking and typing.
I totally witnessed some hard core thyping when I saw Jayme thyping about her next tweet.
by TrillJaguar May 14, 2015