2. When you hollow out a lemon and put it on your dick, using it as a guard when you have sexual relations with a woman.
3. When you put a piece of lemonhead candy in your urethra so that when you blow your load on her face she gets hit in the eye with the candy.
"Did it rule?"
"No man, it sucked, i think she cut me with her teeth and it burned like crazy!"
"Dude, last night i didn't have any rubbers on me, and this chick wanted me so bad!"
"So what did you do?"
"Oh dude, last night i got this girl so bad, got her with a lemonhead right in the eye!"