I (24m) had recently graduated college and per my mom’s (47f) suggestion went home to celebrate with my family.

My sister (17f) came home with a birthday cake a few hours after it started, and my mom asked if I could get a knife from the kitchen in order to celebrate. As I opened the drawer, I was overcome with a sudden urge to kill. I would’ve likely resisted if Servius (6x1034m) didn’t urge me on. My memory is a little foggy, but the last thing I remember is standing above my mom and dad (72m) split directly down the middle. My sister was a few meters in away, but only halfway split. Overcome with guilt, I decided to slit my throat to join them.

I soon met up with them and they were pretty angry. My dad was pissed and said my actions were unforgivable, but my sister and mom said what I did was wrong but it’s nothing to get mad over, especially at my graduation party. My family has been pretty divided over this, so here I am asking what to do. Reddit, AITA?