Shai Hulud
Smash Lord
I recently encountered this term--apparently it refers to an aerial that doesn't need to be L-cancelled.
SH a BAIR (do not FF it) and hold up on the control stick. Nana will jump somewhere between a SH and FJ (a FJ within her box, I'm guessing) and you can quickly desynch into lots of stuff. I'm finding the most useful are Nana BAIR + Popo fsmash, Nana DAIR + Popo dsmash, and desynched jumping ice blocks. If you continue holding up after the desynch but don't attack with Nana, then she will continue to hop along next to Popo.
You can do this from autocancelled SH UAIR as well, but it doesn't seem as useful. Also FJ NAIR and FAIR, but again, doesn't seem as useful.
SH a BAIR (do not FF it) and hold up on the control stick. Nana will jump somewhere between a SH and FJ (a FJ within her box, I'm guessing) and you can quickly desynch into lots of stuff. I'm finding the most useful are Nana BAIR + Popo fsmash, Nana DAIR + Popo dsmash, and desynched jumping ice blocks. If you continue holding up after the desynch but don't attack with Nana, then she will continue to hop along next to Popo.
You can do this from autocancelled SH UAIR as well, but it doesn't seem as useful. Also FJ NAIR and FAIR, but again, doesn't seem as useful.