the feeling you get in your stomach when the person you have a crush on walks into room

One who has a mania for music.

When a woman wearing tight pants lets out a very large fart and the air, trapped in the pants, reverberates through her front end, making her labia flutter.

That feeling you get that tells you you are in love. The feeling you get even just by looking at someone and your heart beats a million times a minute and all you can think about is being with him forever.

the nervous, anxious knots you get in your stomach when you talk with, think about, or are in the presence of the person you love, or like very, very much.

Contrary to popular belief, this incredible feeling cannot be cured with kisses, but do it anyway:D

The sensation of complete and total enjoyment when you are kissed (or in some cases, even acknowledged) by the object of your affection. Comprable to that of the sensation felt on a drop from a significant height (like on a rollercoaster).

The feeling that one gets when talking to the person that they love with all of their heart and that person tells them that they are perfect(definition 8)