1. When you eat a lemon, then give someone head, in hopes that the acid from the lemon
will burn while head is being given.
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.
"Man, last night this
chick gave me lemonhead..."
"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?"
"Lemonhead, man."
"Oh dude, last night i got this girl so bad, got her with a lemonhead right in the eye!"