Good Game but wierd thing happened

So i was playing the game today downloaded it my sister told me too, decided to and its really fun, but we were playing today and out of no where a big yellow hat popped up on her character, so i thought she just put in on but when she went to the inventory she had no hat on, also everytime she shot her gun a fart sound played and a poof of air shot, any one onows what this means??? The hat said "im a cheater"

SSavageboiflop about Experiment Z: Zombie Survival