A dolphin mermaid's idea of a fun date would be like 'hey, let's get high on puffer fish venom and vandalise a yacht'.
Madness string 84291
Stop leaving peanut butter on toast out at night, for fucks sake. You won't get house hippos if you clean up after yourself. You'll probably need an exterminator, depending on how bad they're in there. They may be cute, but they absolutely destroy your drywall, and will fight any pets you might have. They're very territorial.