When one drops a phat nature clump of the brown variety into an unsuspecting toilet

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.

When you're at the gym or in a locker room and you go to get something out of your locker and you turn to find the ass of another man, who's changing next to you, (accidentally) in your face.

Always in a good mood, very friendly and playful. Sometimes gets distracted while doing work but is liked by everyone for his humour and enthusiasm