So happy to see others have similar versions! I My mother just passed away - god rest her soul - her parents were Italian and thought her this song. She always used to sing this to my son while she held his hands he rocked him forward and backwards on her lap. It always ended in a tickle!

See saw
Knock on the door
Whose there
Grandpa
What do ya want
A bottle of beer
Where’s your money
It’s in my pocket
Where’s your pocket
It’s in my pants
Where’s your pants
I left them home
GET OUT OF HERE YOU DRUNKIN BUMB!
(Followed by tickles and laughs!)

Would love to know where this originated but will probably never know!