Buckle
v. in reference to who owns the pants. One may wear the pants in the relationship, but the other owns the buckle to the pants.
A.k.a. one person may be the boss, but the other one controls who gets into the pants.
1.A:I wear the pants in this relationship.
M: Yes, but I own the buckle.
A: You aren't getting into my pants anytime soon.

P:Dude, you know he wears the pants in that relationship. 
F:Yeah, but she owns the buckle.
