You obviously went to the doctor for the X-ray. Did he just give you the image results and tell you to figure it out for yourself or why are you asking us the seriousness?
Your homie who "totally like sprained his wrist last season" isn't a super credible source go with the doctor's word and just get a cast on that beast and be happy it's not an injury to your feet or legs.
Fuck what the doc said, trust me. Looks like you've got a cursor in your hand, so you better take a knife and cut your hand open, take it out and wait for it to heal (like a few weeks or so but you may bleed out and die).
UNLESS YOU GET SURGEREY IN THE NEXT 3 HOURS A SHARD OF BONE IS GOING TO SHOOT UP YOUR ARMINTO YOUR HEART AND YOU WILL DIE A HORRIBLE HORRRIBEL HORRIBLE HORRIBLE HORRIBLE HORRIBLE HORRIBLE HORRIBLE pAINFUL HORRIBLE COCK SLAPPED DEEEEEAAATTTTHHHH
lol. you think a bunch of teenagers and 12 year olds will know the extent of the severity of your broken bone better than the doctor who gave you the x ray?