Mein Lieblingstiger Hobbes definiert das so:

Calvin: What's it like to fall in love?
Hobbes: Well... say the object of your affection walks by...
Calvin: Yeah?
Hobbes: First, your heart falls into your stomach and splashes your innards. All the moisture makes you sweat profusely. This condensation shorts the circuits to your brain and you get all woozy. When your brain burns out altogether, your mouth disengages and you babble like a cretin until she leaves.

Ich finde, da ist viel dran...