as in: I have two younger brothers; one of them is younger than the other

My younger younger brother is playing through OOT* for the first time! He’s 10, too. It’s hard to be 10 sometimes.

Quick doodle after a whole lotta homework this weekend.

*As expanded by Steph G: Onus of Time? **Oak Xylophone of time!
** As further explained: No, I said Oxylophone. O-xylophone.