What Happens if I Push This?

Every once in a while I encounter an icon/sign that makes me chuckle – here’s the latest:

"What happens if I push this?"

Of course what they intend to convey is “Push button for assistance/information” but all I can see when I look at it is “What happens if I push this?”

(the answer appears to be a) someone yells at you b) it makes a noise)