I would love to have my emoticons with me - when I got freaked out I could hold up a sign with
on it ! most of the time it would prob be either
or
or more likely
Seriously a hand signal sounds good - or just say "ive gone blank"
with T I would say "Ive lost my words" at work I say Whoa! my one brain cell jsut went to sleep - what did you say?"
I hope you fnd somthing that works for you
__________________
Its not how many times you fall down that counts
its how many times you get back up! 
(Thanks to fenrir for my Picture 
)
When you have come to the edge of all light that you know and are about to drop off into the darkness of the unknown,
Faith is knowing One of two things will happen: There will be something solid to stand on or you will be taught to fly.
by Patrick Overton, author and poet