As a person that has to inject insulin before eating... I have 15 minutes to eat after taking a shot. Which do you think is cleaner, the table you are eating at or the bathroom counter? All I can say is YUCK!
The biggest problem I have with injecting in the bathroom, is there is often some JERK that has to stare at you while you inject. Going into a stall doesn't work, there is no countertop inside.
I bring my kit with me, take my blood sugar by pricking my finger and using my meter, as much under the table as possible. I take my pen out, screw on a new needle, dial my dose, and inject through my clothes. I try to be descrete, but hey, there's a lot to do.
The person injecting should be descrete, the others should do their best to ignore it. Buy hey, that's just me!
jeff