Yeah ... sounds like you are being way over sensitive. That's a completely different use of the word stand and not related to standing up.

That's not a big deal. It's not meant to be rude and people need to loosen up about being PC all the time.

You know it's an expression, right? Any sane and healthy in their mind person, will understand what is meant by this and that no one is making fun of disabled people. Stop being so over-sensitive and politically correct... :/

I can't stand bad puns

The children are probably smart enough to understand the message and not worry too much about the irony.

I don't see the problem. Kids in wheelchairs get bullied too.

meh, they know what he means. sure it's not politically correct, but people need to stop getting offened over everything under the sun. grow some thicker skin ppl.

It's a common expression, hopefully they will be fine with it.

That's probably not the best way to put it. It's just a figure of speech but children are often more literal than adults so they might get confused and upset by the phrase.

"Taking a stand" does not mean to physically stand up. It means to take a position against some thing or someone that is mean or offensive.