To pull a Gulans:

To causally, publicly break up w/the guy you've been bare backing anal sex w/out a condom for 5 months -

while pretending to date him by going out for drinks, maybe a live band, a movie etc., always sleeping over, never just 'cumming' and going -

while standing in line at McDonald's instead of having a private discussion

A casual invitation / threat used by an individual that is not afraid of fucking someone up.