Things that get me Angry (╯▔皿▔)╯ :
When they trade their good bishop for my pinned knight just to get a pawn.
When I mouse slip against a higher rated opponent in a completely winning position.
When they sac a knight for no reason and I fumble the winning position, and now they brag about the game to their friend.
1.d4 d5 2.c4 dxc4 3.e4 b5 4. a4 c6 5.Nf3 Ba6 (End it all atp)
1.a3 😔(It's so over)