Excited in a sexual way.

Speaks for itself.........

when someone is excited about being around a hot girl

The anticipation of sex, the feeling while having sex, or a synonym for "Horny".

When you feel an erotic tingling sensation in your veins.

a hyper lustfull state often cause by the injestion/inhalation of illicite subtances. In such a state of mind one will be oblivious to anything else around them apart from getting ones rocks off. To the extent where excessive chafing/redness/swelling or lack there of may occur

When someone has the same sex drive and kinks as you, and it makes you wanna scream and cum all over them