What are you, a midge or a mollusc?
As smooth as my spawn's egg-sac!
It's either mud or it's dud.
A slime in grime saves time.
The sewer is where the heart is.
The early bird catches the worm - and YOU!
Beware of cats, hens, and French mens.
A slurp in a burp saves urp.
His, hers, or hermaphrodites?
Is that a pseudo-pseudopodae?
All's well in the shell.
Better ooze than osmose!
You've got to eat hard to stay behind.
A slug in snail's clothing.
A gloop in a glop or a glop in a gloop?
If you were any faster, you'd be a turtle!
Last one in's a pickled sea cucumber!
Bob's your uncle, and your auntie.
I am what the cat dragged in.
When the shoe falls, danger calls!
At the end of every rainbow lies a cabbage.
Turning under a new leaf.
The mildew's always mouldier on the other side.
You're the man-woman of my dreams!
It's not easy to be oozy.