The one thing that puts me on tilt
When I ping my lane MIA several times, alert ping the river towards X teammate and even ping the enemy champ as he draws even closer...and my teammates never moved from pushing their lane and die horribly while feeding my lane/jungle in the process. That puts me on tilt.
What puts me on tilt AND makes my blood boil is when the idiots blame me for it! If I don't follow it's because I CANT follow, whether I'm low on health/mana, bad wave positioning or my lane opponent can simply shit on me, I went above and beyond by basically lighting up a neon sign that says "death imminent please return to tower".
This is why bot lane is always a clown fiesta and champs like Vayne who should have a horrible early game end up on top. The Cait constantly pushing her in while standing in the perfect area for Zac or Rengar to jump in and say hello!