From Longman Dictionary of Contemporary Englishfancy yourselffancy yourselfBritish English informalPROUD to behave in a way that shows you think you are very attractive or clever That bloke on the dance floor really fancies himself. → fancy
Examples from the Corpus
fancy yourself• I fancy myself a famous writer.• Read in studio Now, have you ever fancied yourself as a bit of a cowboy?• And fancies himself as a fisherman.• Now he fancies himself as a great military strategist.• He fancied himself as a strategist.• He fancied himself as something of an impresario, and had some experience negotiating contracts with Hollywood studios.• He fancied himself in love with me, the silly boy, but that was absurd.• Marx was not a humanist, though he fancied himself to be. 