* Whenever a player gets themselves killed by their own grenades or falling to death, the announcer gets blatantly sarcastic in the bottom quotes that show while a player is respawning.
--> ''R.I.P...[[SarcasmMode Who killed this brave soldier?!]]''
* Single humans surviving a pursuing horde of 10+ infected. You'd think that speed bonus would actually help, wouldn't you?
* Midair jumping collisions. Not as funny for the people involved, especially if the mode being played was Quarantine.
* Finding out that the last person on the enemy team doesn't even know how to complete the objective, when the mode requires it.
* Really big explosions involving AP Mines. Generally a community favorite.
* Turkey Leg Clubs.
* The summer or carnival versions of the female specialists, which are basically FanserviceCostumes, can be laughably out-of-place on maps that are in the middle of infected swarm or a snowy environment; ''[[SarcasmMode you sure you aren't freezing in that swimsuit, Viper?]]''