A funny prank would be to wait till your friends sleeping and then collect a DNA swab and send it off to 23andMe - and not share the results with them - just say โthatโs makes senseโ whenever they like / dislike something.
When the wifi is out and you also turn into a North American beaver (Castor canadensis) the second-largest living rodents, after capybaras, weighing up to 50ย kg (110ย lb).