'something seems-sussy' - Possibly a reference to Impostor Mouse. 'its a world of laughter-a world of tears' - A nod to the first verse of, It's a Small World. 'miska mooska-mickey mouse' - A reference to Mickey Mouse's catchphrase in Mickey Mouse Clubhouse. 'wear a mask-even if vaccinated' - Same as above.
'wash your hands-stay safe bro' - A reference to the Covid-19 pandemic, with this specific message already present in Psych Engine by default.