U can search on net for ur questions answer but i will give u 4 similies.
as bald as a coot
as big as an elephant
as busy as a beaver
as blind as a mole.
actaully i forgot to tell u the definition of similie:- a similie is a figure of speech involving the comparision of one thing with another thing of a different kind, used to make a description more emphatic or vivid.