Like a rat up a drainpipe British phrase informal simile
Very rapidly and eagerly
When the recess bell rings, the kids run away to play like rats up a drainpipe.
Like a rat up a drainpipe, the robber took her wallet and ran away.
Very quickly
Very fast.
Quickly and effortlessly
This phrase has been used since the 1960s.
To indulge unlikely or fantastical possibilities
He tends to cast beyond the moon, so his moniker is "dreamer".