- Bernd Schmidt
- 8.8 centimetre(s)
- Germany (Wendlingen)
The largest gape measures 8.8 cm (3.5 in), and was achieved by Bernd Schmidt (Germany) in Wendlinger, Germany, on 17 January 2015.
Bernt's son asked him to attempt the record after seeing this record listed in the 2015 edition of the Guinness World Records annual.