The act of taking a laptop into the bath with you and massaging your meat.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

a form of female masturbation where the female in question gets into a bathtub, moves underneath the running tap water so that the water runs directly over her clit until orgasm.

The act of drunkenly pooping in a cooler of beer

A method of female masturbation in which sexual pleasure and/or an orgasm is achieved by a woman who repetitively glides her clitoris over the (often lubricated with warm water) top surface of a modern-style bathtub's apron (outside portion of bathtub that can be mounted jockey-style)

Where a man has sex within the fat folds of a woman

When a group of people are together at a party looking at a variety of Youtube videos.