you've gone to the toilet and when you go to the sink to wash your hands you've started brushing your teeth on accident, amirite?

How do you get something like that confused? That's like saying "Sometimes when you go out to shovel your driveway to get rid of snow, you end up sun tanning instead, amirite?"

I don't understand how this many people have done this.

I frequently do the opposite, which is weird.

done that before. lol brushed my teeth twice within 5 mins of the first time.

I DID THIS LAST NITE!! :O