This is a lesser known but still dope song.
Only two Beatoos are on the track with Ringo on drums and handclaps and Paul on lead guitar, bass and vocals.
Here's something I bet you didn't know: it's about monkeys fucking.
Said Sir Paul:
A male [monkey] just hopped on the back of this female and gave her one, as they say in the vernacular. Within two or three seconds he hopped off again and looked around as if to say, ‘It wasn't me,’ and she looked around as if there'd been some mild disturbance ... And I thought ... that's how simple the act of procreation is ... We have horrendous problems with it, and yet animals don't.