Fangirling:
"V. To make loud high pitched noises (this includes squealing, yelling, or talking so quickly that it doesn’t sound like they are actually speaking a real language) or show their excitement for the object of their obsession though movement (this includes jumping up and down, glomping, running in circles, etc.). Fangirling involves a lot of physical action."
~Taken from UrbanDictionary. (Small spelling/grammar errors corrected by me)

wink
That's pretty much a perfect definition.
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And what if it makes you laugh now but you cry as you fall asleep?