Hear me out here...

[bigbangtheory 5,000+ posts]

Some people really were dropped on their heads as baby's.................A LOT!

 

[phyphoestilic 5,000+ posts]

Its used in the dentist office cuse they mix it about 50/50 sometimes 60(oxygen)/50 nitrogen oxide so it doesnt kill ur brain cells.

 

[NJack2AF 10+ year member]

Its used in the dentist office cuse they mix it about 50/50 sometimes 60(oxygen)/50 nitrogen oxide so it doesnt kill ur brain cells.

Yup sure is. That's why you breathe air when you do it... At least I would if I ever did it... Which of course I don't...