When you you have to watch someone having relations with your girlfriend and they “forget to pull out.” That would be a reverse euphemism for "you see a high level of one of your favorite covers you wish you had that number of covers for and the other person has messed them up spectacularly. Although in both situations you usually laugh a little before you cry.
Forgetting the number of strike tiles on the board and getting greedy going after that one final blue match to maximize Spidey’s heal, only to down the opponent.
Seeing that the only match you can make is going to setup the opponent for an epic cascade.
Knowing the opponent is going to launch a death blow and the guy you want to protect is the only one who can make a match.
New reward… 20 ISO
Another one that makes me “homicidal” is having to close 5 bloody pop ups every time I come back into the game.
Not being able to send my Blue Spidey or other similarly rare covers to my friends who haven’t been as lucky as I and are still working on him.
Man to be able to trade would be so cool.
Also… needing the blue cover and getting nothing but the other color covers until you finally snap, work super hard to earn one in either a tournament or (gasp) breakdown and spend the 1250 HP… and then the very next standard pack you get hands you the cover you needed the whole time.