Related Clues:

• Sponge (off of)
• Cosmo, to Jerry
• Live like a parasite
• Blood-loving worm
• Parasitic creature
• Be a freeloader
• It's a real sucker
• Annelid used in hirudotherapy
• It's a bleedin' worm
• Be a parasite
• Parasite sucker
• Blood-sucking worm
• Informally a down-and-out
• Bloodsucking worm
• Blood-sucking worm or parasitic person