Overheard on the street yesterday:
Guy: "So, how allergies work is, some time in the past, one of your ancestors had something and it made them sick, and their body was like, 'Let's not have that again,' and it turned off the gene, and that got passed down to their descendants. And what our company does is, we turn that gene back on."
Woman he's talking to: "Wow, that's really interesting."
Me (internally): "ARRRRGHGAAHHHNOOOOOOOGRRRR."