A saying that McDonald's workers in the UK say when someone has rudely asked for food, mostly a Big Mac. One of the team members actually spits on the burger and hands it to the customer
Customer: Can I have a BigMac please?
Lisa: Certainly, it won't be long
Customer: Oi, moron. I ordered my BigMac a while ago and I'm still waiting for it, hurry the hell up will you.
Lisa: Certainly sir *goes to the kitchen* Joe, we need a McSpit
Joe: OK Lisa, one McSpit coming up *spits in burger*
Lisa: Here you go sir, enjoy
Customer: About damn time!