I work at a fast food chain. I won't say which one in a bid to keep my job but I will tell you that I work on drive-thru and that it amuses me more than it should....
If I've been there a few too many hours I'll switch from saying "would you like a large coke with that?" to the slightly different "Would you like a large cock with that?" ... You'd be surprised how many we sell :P

Occasionally there will be an abusive customer who will make working there hell. He or she will swear, drop the C or F bomb a few times and then make angry grunting noises like a dying horse. I usually just slide the window shut and watch the tantrum but occasionally they throw things at the window or even better....punch it. This might not sound funny at all but the glass is double layered so usually it results in bruised knuckles for them and a great story for me.
Sometimes I like to mess with the customers heads just coz I feel like it. Like today I started talking to this guy, who would have been about 19....watch me lie:
B: *Orders*
G: *Stares - at his hotness, nodding sporadically* You look tired, had a big day?
B: Yeah, been working out *flexes muscles*
G: *Stares-mouth gaping* Hmmm I'm tired too, had school at 7 (lie) coz I had swimming training (lie-don't remember the last time I swam...)
B: Hmmm I swim too...(G is totally in....) where's your cute as accent from?
G: England (Lie) parents moved when I was 8 (Lie) *Hands back receipt*
B: Naaah keep it. *G notices his number written on it*
GIORGIA FOR THE WIN!!!
Oh and that's not the only time. I've had people ask me to have their babies, to marry them and someone wanted me to get in their car coz they had candy....tempting I have to admit :)
I love my job, even though I don't get paid nearly enough, I come home smelling like grease and oil and my hair is yanked back so tight that I look like I have had an unfortunate face lift. Doesn't matter - where else can I ask people "do you really need that upsize?"
Hope all is well.