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!"