Nervous Ball Tingle

The tingly feeling that originates under your balls and moves forward towards your base. This is caused by excitement, nervousness, and being grossed out. Can be shortened to NBT.

Q: Looking at Kevin Ware's broken leg makes my leg hurt.
Me: It gives be a nervous ball tingle, not a good NBT but a "I want to throw up" NBT.

Me: "In waiting for the Athletics Surplus Sale, I get a HUGE NBT. "