There's nothing worse than forgetting to shake the bottle and ending up with ketchup pre-cum on your sandwich.

Just looking at the sad, watery mess on the bread takes me back to my childhood, my 8-year-old self innocently asking my older sister why she had a string attached to her nosebleed hankie and why it kept coming back up when I flushed it, her running away in tears and our mother screaming "SHE'S BECOMING A WOMAN YOU INSENSITIVE LITTLE BASTARD".

Always shake the bottle.