What are some of the most bizarre and unusual records in the book, and how were they achieved?

The Guinness World Records book is full of fascinating and often bizarre achievements, ranging from the impressive to the downright weird. Here are some of the most unusual records and how they were achieved:

• Longest fingernails (ever) on a pair of hands (male): Lee Redmond from the USA grew her nails to a combined length of 8.65m over 30 years.
• Most tattooed senior citizen (female): Charlotte Guttenberg from Florida, USA, has 91.5% of her body covered in tattoos, earning her the nickname “the Illustrated Lady”.
• Most Big Macs consumed: American Don Gorske has eaten over 32,340 Big Mac burgers from McDonald's since 1972.
• Longest time spent living with scorpions: Kanchana Ketkaew from Thailand spent 33 days and 33 nights in a glass room with 5,000 scorpions in 2008.
• Fastest time to smash 30 watermelons with the head: Irishman Ashrita Furman broke this record in 2013 by smashing the watermelons in just 18.19 seconds.