Sussex, Essex, and Middlesex all have the sex word in them which makes 21st century people giggle

sussex and other places like essex and middlesex have some suffix that signifies “town” or something, presumably in anglo-saxon

https://www.youtube.com/watch?v=uYNzqgU7na4

The name Essex originates in the Anglo-Saxon period of the Early Middle Ages and has its root in the Anglo-Saxon (Old English) name Ēastseaxe (‘East Saxons’), the eastern kingdom of the Saxons who had come from the continent and settled in Britain.

https://en.wikipedia.org/wiki/Essex