The Most Brutal Opponent in the UFC? Yourself. Just Ask This Guy.

‘I don’t care about your policy': Guest checks into hotel for 45 minutes, then leaves, demanding a full refund which employee refuses 1

'She was fired': Hybrid employee takes a take a sick day instead after being admonished by boss for working an additional day from home while sick 2

'We have documentation': Hotel guest charged $500 after he didn't show up for his reservation, then expects employee to pay for his mistake 3

'You've got to be kidding': Inexperienced new employee abruptly leaves IT company after senior employee fails to help him adjust to the workload 4

'If I am not employed there, the software cannot be used': Teacher wipes software from all machines before leaving for good after years of free extra labor 5

Manager insists on personally reviewing every job candidate Recruiter finds, lives to regret it: 'I never received pushback again' 6

'I quit. Karen reported me to HR for it': Sales ops director leaves after HR sides with lazy Karen, now Karen is furious that she has to work 1

Fast food Karen throws back-to-back tantrums, gets herself arrested: 'Karen [ended up] sitting in the backseat of the police car' 2

‘I don’t care about your policy': Guest checks into hotel for 45 minutes, then leaves, demanding a full refund which employee refuses 3

‘Nice try’: Resident claims public neighborhood area as her personal parking space, leading neighbor to a clever payback 4

'Check and mate!': Housemate leaves roommate high and dry, refusing to help out around the house after his belongings keep disappearing 5

'If I am not employed there, the software cannot be used': Teacher wipes software from all machines before leaving for good after years of free extra labor 6