Yesn't

Yesn't is a substitute for no. Yesn't means no.

Without yesn't: Have you seen that new Nokia phone?
With yesn't: Have you seen that new Yesn'tkia phone?
Without yesn't: No. Let's not hangout. I don't want to hang out.
With yesn't: Yesn't. Let's yesn'tt hangout. I don't want to hang out.
Without yesn't: Edward Snowden.
With yesn't: Edward Syesn'twden.
Without yesn't: Uno.
With yesn't: Uyesn't.