When a guy decides he's not going to go all the way with a girl, but instead 'dips it in a few times'. Such an act us normally undertaken somewhere convenient nearby, such as a public toilet. This action is often associated with the consumption of absinthe.
Dude 1: Did you fuck that girl last night?
Dude 2: No, I just went to the toilet to give her a michal!
Dude 1: Where did you go with that girl on the beach last night?
Dude 2: I went back to her's for a casual michal
Dude 1: Did you take that girl to banjo practice?
Dude 2: No, I just gave her a michal