Short and to the point

[Imogene]

Two teenage boys come in last night while I'm the only cashier, and one asks me, "Can we ride the senior citizen carts?"
I just give him a withering look, as he is standing there quite placidly, and I immediately know he's just f*cking with me, so I reply, "Are you disabled?"
"No."
"There's your answer, then."

[Argabarga]

Pity he didn't take advantage of his obvious mental disability

[PatchO'Black]

Here is one of those "only in my mind" kind of answers:

"Only if your legs are broken. We can arrange that, of course."

[tropicsgoddess]

Pity he didn't take advantage of his obvious mental disability

His disability is common sense challenged.

[Kristev]

And if people got disability for that, nearly the entire country would be on it.