I find nothing more baffling than customers who insist on staying at a restaurant after it has closed. I have been mopping the floors of an eating establishment around families sitting at the table just talking and carrying on. It's people like these who make me grateful that I at least have the decency and social skills not to behave the way they do. One TikToker has dedicated his page to documenting frustrating situations like this. Dean Redmond posts videos divulging the juicy and frustratin…