Related Clues:

• Move like slime
• River-bed mud; leak slowly
• Slimy mud in one of three English rivers, say
• ... sweat endless hooch
• Emit sounds of delight on radio
• Drink, with top off, is to trickle out
• Slowly trickle
• Be seepy
• Mud from said river
• Gentle flow
• Exude mud
• Escape from, uttering cries of excitement
• Sediment from river, say
• Don't start to drink slimy stuff
• Aerosol, regularly returned, containing unknown leak