Fingerlocked

The typing-equivalent of tongue tied, in which you either can't think of the word or are too stunned to type what you wish.

Example 1:

Stephanie: I'm pregnant!

*5 minutes pass*
Stephanie: Hello?
You: Sorry. I was fingerlocked for a second.
Example 2:
Elizabeth: That was so...
Val: So what?
Elizabeth: Umm... that word.. Like rednecks and mustaches meaning evil people.
Val: ... Stereotypical?
Elizabeth: YES! God that was stupid of me.
Val: Way to get fingerlocked. xD