look up any word, like sapiosexual:
 
1.
The general rule for the adolescent to acceptable dating , and further relations. Generally used by teens and young adults.
Has begun to be used more often in 2013, as it's becoming more socially acceptable.
Half your age plus 5.
Miley: I'm totally going to hook up with tom.
Anna: You're only 14!!!
Miley: It's fine, I've reached pubery, and I'm old enough. And considering the half your age plus 5 rule, it's fine.
Anna: He's 18...
Miley: 1/2(18) = 9 + 5 = 14.
Anna: Ahh makes sense now.
by Samoy August 29, 2013
5 2