Corny joke

Not sure if someone already thought about this, just started singing it in my head while I was reviewing for the Obligations and Contracts midterms. This is why I find it hard to study, I easily get distracted with nonsensical things.

KNOCK!! KNOCK!!

Who’s there?

Obligee-obligor

Obligee-obligor who?

(Beatles song)
Desmond has a barrow in the market place
Molly is the singer in a band
Desmond says to Molly - girl I like your face
And Molly says this as she takes him by the hand.
Obligee-obligor life goes on bra!
Lala how the life goes on