Mothers and sisters up and down the country can be heard howling in frustration at muddy boots in the hallway, dirty clothes strewn across floors, food-encrusted plates piled up under the bed. Over the years, they do their best to civilise the male members of the household when it comes to matters domestic.
And yet, as anyone who has ever visited a son, brother or boyfriend at their university halls can confirm, these lessons don't always take. This hilarious video explains just a few of the horrors that await the unwary girl who enters a "boy's" bathroom.
More on Parentdish