Me and some friends were playing with Chrisbot6's Renderman mod, and we were riding in a bus, and Renderman popped out of nowhere, but he had spawned inside the bus, and the bus freaked the forget out.
Also, I built a giant richard snaking all over a house I'd built, and made it look like it was attached to my character. One of my friends said "JOSH GET YOUR SCHLONG OFF THE TABLE"
My other friend was loving speechless.
Good times.