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. "
by PrinceMichael August 18, 2015
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