A couple of Knock Knock jokes

[KBs PensNmore]

Knock knock,
Who's there?
Wanna tish.
Wanna tish who?
No thanks, I don't need to blow my nose.

Knock knock,
Who's there?
I need a.
I need a who?
I need a hug.

[AlexS]

Knock knock,
Who's there?
Little old lady.
Little old lady who?
I didn't know you could yodel.