Not sure who’s got the bigger mummy issues here, but we’d steer clear of talking badly to anyone’s mum around the second guy in particular:
Bit of a head fuck for the mum I guess. On one hand her son will probably treat her like a Queen for the rest of her days and on other, well, he could wake up with brain damage and not even recognise her anymore. Either way, the point stands — be nice to your mums. They hold the key to completely wrecking your life, if they choose.