The UK is full of rude place names. The North West has a Two Butt Lane and a Pincock, while Yorkshire is arguably worse, boasting an Upperthong.
South Wales includes such classics as Pwllypant, Cwm Farteg, and Bully-Hole Bottom.
Northumberland has an Ogle and a Frolic in close proximity, as well as Bushygap.
Cornwall has not one but two Shag Rocks and a Brown Willy.
Sussex is notable for having Dicker, The Dicker, and Upper Dicker all nearby.
There is also a surprising number of place names that are also emotions (Seething, Corney, Lusty).
All this is from the Marvellous Map of Great British Place Names, available from Strumpshaw, Tincleton and Giggleswick.