Knock Knock.
Who’s there?
Mamata.
Mamata who?
mmm tata from the UPA?

Knock Knock.
Who’s there?
Jagan.
Jagan who?
Jagaane aaya hu main Congresswaale ko!

Knock Knock.
Who’s there?
Kalam.
Kalam who?
Kal aam admi ka President tha, par aaj phir nahin banega.

These versions by Sunil Rajguru