The toilets in Walgreens are not to be used for chatting on your phone. If whatever the hell it is you're doing can be done outside of the stall (i.e. talking to your boss), the three people waiting to actually eliminate waste in the toilet would be grateful if you would haul your ass off the commode and take your call outside.

Thanks, obnoxious person, for at least having the decency to look suitably embarrassed when you realized people were waiting for you to get off the phone with your boss while you were apparently taking an epic shit.