The sensation of being nervous and excited at the same time;
When you want to jump up and down and yell "YAY ME!" but you also want to curl up in a teeny tinyball and hide at the same time.
In the beginning of My Little Pony: Equestria Girls, Pinkie Pie notices Twilight is nervousited and assures her that everyone has felt that way at one point in time. Fluttershy, in fact, feels that way almost every day
Beauty Nervousness is when a boy, girl, man or woman experiences a persistent uncomfortable feeling that becomes active whilst a good looking person is in their presence. Beauty Nervousness is common in young children but rare in adults as they have grown and matured.
There's this really hot girl I see over there but I can't talk to her, man!
Why?
I've got Beauty Nervousness, bro!
Just do it and go to her!
*Goes in direction of hot girl and almost feelssick but luckily leaves before any damage is done.