a euphemism for carnal knowledge, redeemable in exchange for many gold stars
Kat gave Ben his hundredth gold star, so now he can get xtra prize!
by nostalgicrunner February 16, 2010
What one person can give to another person of the opposite gender as a reward; can be received in exchange for many gold stars.
Jenn was very aroused by Tommy and so she decided to give him xtra prize on the sofa.
by aperson April 25, 2005