Some of the "punny" Discord user names shown on the tablet Jet reads are menace2urmom, doxxingqueen, (Dancing Queen) anondeadmou5, (a Dead Maus reference), user8008135, (Boobies) thxfrthmmrs (Thanks For The Memories), user8675309 (from the song 'Jenny') and inotacop.
The song McDermott was whistling outside Elliot's home was "Farmer in the Dell." This is the same song Omar whistled in The Wire (2002).