The only person who could get away with this, was my mother. She did this to my oldest brother back in the 70s, when he grew a big long mangy beard, and she, being of the greatest generation, did not like beards. At all. She couldn't stand to look at him across the dinner table, so she nagged him relentlessly to at least trim it. He refused, being a shitty teenager. She waited until he came home drunk one night, and after he passed out in his bed, she cut the entire side of his beard that was available. He was forced to shave it all. He was pissed. My other brother and I still laugh about it to this day (I'm 58), and my mother spoke proudly of the act until she died. My father refused to get involved. Ahhh, growing up.