rat
like a drowned rat: seedrowned.
like a rat up a drainpipe with great and opportunistic speed and vigour. informal
2005Scotland on Sunday Give Bazalgette an opening, and he's in there, like a rat up a drainpipe.
love rat: seelove.
not give a rat's ass: seeass.
rats deserting a sinking ship people hurrying to get away from an enterprise or organization that is failing. informal
smell a rat: seesmell.