Manners don't cost a thing - it's something we are told time and time again from being very young - and one McDonald's worker has gone above and beyond to ensure that somebody speaking to her knew that she wasn't impressed with their tone.
Sinead Poyser, who posts on TikTok under the username @.sineadpoyser, shared the video to prove that it's not just Maccies customers that staff members have to stress about - it's also delivery drivers.
Sinead is known on TikTok for posting videos role-playing customers and staff member scenarios at McDonald's, making customers aware of annoying things they do - such as asking for no salt on chips.
