Oooh...I KNOW I'm going to get told I am weird.
I was in Tesco and the young lad at the till was getting me some bags...he got thefirst off by SLOBBERING on his fingers and handing me the bag sopping wet...I actually FELT his spit on the bag...he went to get another and did the same....lickety-lick...spitty-spitty-slobbery-slurp
....so I said "Don't lick your fingers please, I can feel your saliva all over the bag."
He was like 
And so I got all British and said "It's nothing personal...I have OCD"
WHich I do....but still...surely this would be gross to a non OCD person!?
Was I BU?
A to tell him
B to get all Brit and apologetic about it.