I looked up funny British placenames (most of them are in England). There are some crackers.
Examples:
Bell End
Bitchfield
Butthole Lane
Cockermouth
Cocks
Fanny Hands Lane
Fan Y Bîg
Fingeringhoe
Great Bottom Flash
Great Cockup
Lickey End
Pants
Piddle Valley
Pratts Bottom
Rotten Bottom
Scratch Arse Ware
Sheepy Magna
Shitterton
Slag Lane
Tickle Cock Bridge
Titty Ho
Twatt
Wetwang
BTW every one of these are real placenames.