Professional athletes are generally not the strongest at arithmetic.

On Thursday night’s Insde the NBA, Shaquille O’Neal and Kenny Smith got into a peculiar and absurd discussion about how to supposedly save money on gas. 

Just look at Ernie’s reaction.

And Chuck is just sitting at a loss for words.

So, according to Shaq, half of a gas tank that had $80 worth of gas put into it can somehow be filled back up for just $20, instead of adding another $40. Does Diesel even use gas anyways?

Even though the math doesn’t quite add up, we still love Shaq and the TNT crew, because you never quite know what will come out of anyone’s mouth sitting on that desk.

(h/t NBA on TNT)