The injury sustained when turning ones head or body rapidly to observe a female.
Take a look at that totty over there, but mind you don't get gashlash.

My neck hurts after walking past all those hotties, I think I have a severe case of gashlash.

I spent the whole day meerkatting, and I have got gashlash.
by killban October 26, 2010
Get the gashlash mug.