We asked some of our favorite mental_floss writers and researchers to send us their favorite dad-related facts and stories. Here are 15 you can use around the grill this weekend.

1. Halsey Taylor invented the drinking fountain as a tribute to his father, who succumbed to typhoid fever after drinking from a contaminated public water supply in 1896.

2. George Washington, the celebrated “Father of Our Country,” had no children of his own. Researchers believe that childhood illnesses may have rendered him sterile. He did adopt the two children of his second wife, Martha Custis.

3. In Thailand, the King’s Birthday also serves as National Father’s Day. The celebration includes fireworks and acts of charity and honor – the most distinct being the donation of blood and the liberation of captive animals.

4. A.A. Milne created Winnie the Pooh for his son, Christopher Robin. Pooh was based on Robin’s teddy bear, Edward, a gift Christopher had received for his first birthday, and on their father/son visits to the London Zoo, where the bear named Winnie was Christopher’s favorite. Pooh comes from the name of Christopher’s pet swan (of course).

5. Kurt Vonnegut was (for a short time) Geraldo Rivera’s father-in-law. Rivera’s marriage to Edith Vonnegut ended in 1974 because of his womanizing. Her ever-protective father was quoted as saying, “If I see Gerry again, I’ll spit in his face.” He also included an unflattering character named Jerry Rivers (a chauffeur) in a few of his books.

6. Andre Agassi’s father represented Iran in the 1948 and 1952 Olympics as a boxer.

7. In 1950, after the Washington Post music critic gave Harry Truman’s daughter’s concert a negative review, the president came out swinging: “Some day I hope to meet you,” he wrote. “When that happens you’ll need a new nose, a lot of beefsteak for black eyes, and perhaps a supporter below!”

8. The voice of Papa Smurf, Don Messick, also provided the voice of Scooby-Doo, Ranger Smith on Yogi Bear, and Astro and RUDI on The Jetsons.

9. In 2001, Yuri Usachev, cosmonaut and commander of the International Space Station, received a talking picture frame from his 12-year-old daughter while in orbit. The gift was made possible by RadioShack, which filmed the presentation of the gift for a TV commercial.

10. The only father-daughter collaboration to hit the top spot on the Billboard pop music chart was the 1967 hit single “Something Stupid” by Frank & Nancy Sinatra.

11. In the underwater world of the seahorse, it’s the male that gets to carry the eggs and birth the babies.

12. If show creator/producer Sherwood Schwartz had gotten his way, Gene Hackman would have portrayed the role of father Mike Brady on The Brady Bunch.

13. According to a 2005 survey commissioned by TiVo, here are the top ten TV dads of all time: 1. Cliff Huxtable (The Cosby Show); 2. Sheriff Andy Taylor (The Andy Griffith Show); 3. Pa Ingalls (Little House on the Prairie); 4. Howard Cunningham (Happy Days); 5. Ward Cleaver (Leave it to Beaver); 6. Jim Anderson (Father Knows Best); 7. Mike Brady (The Brady Bunch); 8. Tim Taylor (Home Improvement); 9. Reverend Eric Camden (7th Heaven); 10. Danny Tanner (Full House).

14. The Stevie Wonder song “Isn’t She Lovely” isn’t about a woman he’s lusting for; it’s about his newborn daughter, Aisha. If you listen closely, you can hear Aisha crying during the song.

15. Dick Hoyt has pushed and pulled his son Rick, who has cerebral palsy, through hundreds of marathons and triathlons. Rick cannot speak, but using a custom-designed computer he has been able to communicate. They ran their first five-mile race together when Rick was in high school. When they were done, Rick sent his father this message: “Dad, when we were running, it felt like I wasn’t disabled anymore!” Since then, they have run over 66 marathons and 229 triathlons as a team.

Give your dad a hug on Sunday. Happy Father’s Day!