spilled drinks on purpose

i was feeling pretty stressed out one night at work and decided to take it out on a couple who were super annoying anyway. i knocked over their drink by accident but inside i was smirking, thinking maybe this would get them to finally leave or shut up. turns out they got mad but stuck around longer complaining. had to fake sympathy and offer free shots as an apology. needless to say, they never came back after that night, though i dont know if it was cause of my little trick or just because i poured their drinks too slow.