Every lab scientist just felt a chill down their spine! Mouth pipetting acrylamide gel is the lab equivalent of licking electrical sockets. Acrylamide is a neurotoxin that causes exactly what the title suggests - tingling hands, numbness, and eventually nerve damage. That's why SpongeBob looks so shocked - his nervous system is literally shutting down! 😱 Modern labs have strict protocols against mouth pipetting (using your mouth to suck up liquids through a tube), but back in the wild west days of science, this was actually common practice. Now we use mechanical pipettes because, you know, we prefer our scientists without permanent nerve damage!