Adjective
very like a whale (not comparable)
(slang, humorous) Highly improbable; not to be believed.
Do you see yonder cloud that's almost in shape of a camel? Polonius: By the mass, and ‘tis like a camel, indeed. Hamlet: Methinks it is like a weasel. Polonius: It is backed like a weasel. Hamlet: Or like a whale? Polonius: Very like a whale. William Shakespeare