1. Locals in the Irish town that Viagra is manufactured in claim the fumes from the factory affect men in the town, with one barmaid saying, "One whiff and you're stiff." Nito100 / Getty Images Though Pfizer, the manufacturer of Viagra, denies these claims, residents say they can even see the effects in their dogs. 2. Pineapples have flesh-eating enzymes in them, which is why your mouth stings when you eat it. Oleksii Polishchuk / Getty Images The University of Melbourne states, "When you eat the pineapple, it's essentially eating you back!" What a way to put it. 3. If you play music to a cheese wheel, the tunes will affect its flavor. Cheese wheels have the strongest flavor when they've listened to hip hop. Zorazhuang / Getty Images In a 2019 study that played classical, rock, electronic, and hip hop to cheese wheels, the hip hop wheel had a stronger flavor and aroma. 4. Selling sex toys is banned in Alabama. Ipggutenbergukltd / Getty Images You can buy one for medical use, though. 5. Birds are indifferent to capsaicin (the component in peppers that makes them spicy), so you can put a chili pepper in a bird feeder and they won't care. Artmandave / Getty Images This allows the birds to carry the seeds of the peppers with no problems. 6. The white lines that divide the road on highways are about 10 feet long. Fg Trade / Getty Images Also, the space between each line is 30 feet. Crazy! 7. Humans almost went extinct 75,000 years ago. Solarseven / Getty Images A supervolcano named Toba erupted and covered a huge chunk of the world in ash, blocking out the sun and making it hard for plants to grow. 8. Bob Ross was a Master Sergeant in the military. PBS As soon as he left the military, he decided he didn't want to yell at people again. 9. American Olympians get taxed on their medals if they win a silver or gold in the games. Alexandre Loureiro / Getty Images They don't get taxed on a bronze medal because it's mostly made of copper. 10. Bubble wrap was originally designed to be used as wallpaper. Ajt / Getty Images Sealed Air, the company behind bubble wrap, is now a multi-billion dollar business. 11. Not only does hot water make a different sound than cold water when poured, 96% of people can correctly guess the temperature based on sound alone. Dzurag / Getty Images You can follow the link above to hear them both and see if you're part of that 96%! 12. Mosquitoes can smell which blood type you are. Tom Stocker / Getty Images They're twice as likely to bite someone who is Type O as opposed to Type A. 13. Bill Hader once got fired from a job at a movie theater for spoiling Titanic to annoying moviegoers. Emma Mcintyre / Getty Images, 20th Century Fox In an interview, Hader explained, "I said, ‘By the way, the boat sinks at the end. Leo dies. It’s great, you think he’s sleeping, but he’s frozen! Oh, and the old lady throws the jewelry in the ocean. Enjoy the movie.’" 14. Most Rubik's cube combinations can be solved in under 20 moves. Cate Gillon / Getty Images Though there are over 43 quintillion ways it can be jumbled, most combinations can be solved in less than 20 moves. 15. TV commercials emit a tone inaudible to the human ear that your smartphone picks up, letting advertisers know that both devices might belong to you. Jgroup / Getty Images, Ridofranz / Getty Images This is one way how advertisers work to deliver targeted ads to you. 16. When the US post office started mailing packages, they also mailed children. Robert Clay Reed / Getty Images Now, the only living things they'll mail are animals like bees, birds, and scorpions. 17. Finally, there's a point in time where Pablo Picasso and Dwayne Johnson were alive at the same time. George Stroud / Getty Images, Jon Kopaloff / Getty Images Picasso died in 1973 and the Rock was born in 1972.