One woman in Canada took this phrase to a whole other level on Monday evening.
On a video of security footage posted to YouTube, a woman can be seen angrily gesturing at staff. She then grabs some napkins and pulls down her trousers.
She can then be seen picking up her excrement from the floor with here bare hands, and throwing it at staff behind the counter. She then fled the scene.
"In limited cases across the country, restaurants have a restricted access policy for restrooms to ensure the well-being of our guests", the spokesperson told Global News.
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One of the students showed the video to local journalists, which shows nightmarish for children the situation. The animals had reportedly been killing chickens that the students were raising for class.
"We strive to create a welcoming environment for all of our guests and the communities we serve", the statement added. "We are deeply concerned by this video as the safety of our team members and guests is always a top priority for us".
The woman was detained by authorities and released with instructions to attend court at a later date.
Police were called and located the suspect in the parking lot, CTV News reports.
Tim Hortons says it will be working with the owner of the restaurant to help look into the whole situation.