Whumpees getting revenge in small ways?
They won't try to escape because they know they can't but make they'll fuck with Whumper in little ways. (Maybe to make them think they're losing it and use that to their advantage in the future??)
Moving furniture slightly out of place
Moving things where they shouldn't be like mail in the fridge if they have free range of the house
Causing Whumper to lose things like their glasses or hiding things
Repeatedly react to noises that aren't there like pretending there could be people near the house to make them paranoid
Pretending there are bugs in the house or on Whumper
Pretending a certain word or thing doesn't exist like "I'm really sick of eating spaghetti every night." "I feed you rice???" "What's rice?"
Whumper comes in to torture Whumpee and they pretend that it already occurred that day "ugh I thought you said we would only do this ONCE a day"