Yes Linde, Piggies is also funny. I don't know about Northern Song, however. Still George doesn't seem as open to humor as John and Paul.
"effervescent" means "bubbly" -- just a little stab at poetry, if that's allowed.
As for Bob Dylan, I guess Highway 61 Revisited is kind of funny; but most of Dylan's humor seems awfully self-important -- which is the first proof that a person is not truly light-hearted, but has some kind of ulterior serious agenda.