What is Slocker?
1.
Mendip caving slang for a cave entrance that has been used as a dump. Possibly very old term but widly used now.
Ee slocked it down that there hole. i.e Stoke Lane Slocker
See
2.
A man who likes to go to public toilets without locking the door.
I were suprised by the slocker when I opened the door