(noun) The exit button, notoriously small for mobile game advertisements.

X on top is a term used when saying that you are not interested in anything else than a physical relationship and that you would not grow attracted to anyone giving you that.
The uses include but are not limited to:
1 a Greating
2 a Personal Message
3 a Good Bye
4 a Random Phrase

When you partner up with your friends ex girlfriend and he partners with your ex girlfriend in beer pong

refering to "X Protonium."

Ramblings that occur when one is extremely horny due to being away from smexy significant others for a long time.

Note: Factors such as the following may effect level of ramblings-
-Being located in another hemisphere than significant other
-Significant others willingness to tolerate to your ramblings
-Duration of seperation (Those seperated for more than 7 months should take saftey precautions before engaging in sex)
-Significant other is a curly headed fuck

write this when your teacher asks you to write one thing for each letter

When two x-ray images are combined together using an image editing program.