I'm feeling silly, so here's some of my favourite silly UK place names, courtesy of http://www.jump-around.com/tools/place-names/
Assloss
Balls Cross
Bitch Craig
Breasty Haw
Buttock
Cock Heads
Cum Hag Wood
Fulking Hill
Great Cockup
Lickey End
Mingearraidh
Nasty
Pishill
Pisser Clough
Slag Hill
Spunkie
The Bastard
Twathats
Twatt
Wetwang
Expatbrit, doing his bit for British tourism