Drinks

A blonde, a brunette, and a redhead all go to a bar. The redhead walks up to the bartender and says,"I'll have a BL." So the bartender gives her a Bud Light. The brunette walks up next and says,"I'll have an ML." So the bartender gives her a Miller Light. The blonde is catchingon so she goes up to the bartender and says,"I'll have a 15." The bartender thinks about it, looks around, and says,"Ok, you stumped me. What's a 15?" The blonde goes,"Duh! 7 and 7."