Dipping hands into a bowl of glass beads, IIRC.

And then he goes off in engineering about how dangerous a man lift is, because if you hold onto what are clearly hand rails, a support will chop your hand off, and some dipshit is like "Who would put their hands there?" as if you wouldn't grab at the waist high rails riding a lift in a ship that might pitch and roll. They try to play it like he's hormonal but it's a solid point.