I think about this all the time and once asked the people on my private instagram (so people I went to grade school with) years ago if we all remember.

New Cumberland, Central PA, USA

Slap dilly oso,
slap slap slap,
say saaaaan derico,
rico rico rico,
galore, galore,
I'll throw you out the door,
saying
1 2 3 4!

Everyone agreed, this is the perfect way to do it.

However, the reason I asked in the first place is I was attending summer camp in the Eerie, PA area with kids from across the East Coast/Midwest/Canada. Growing up, this is how I found out that there were other versions of Slap dilly oso... we literally all had different versions. There was sorta a centralized one that became the camp version, which I believe was probably mostly influenced or completely influenced by Pittsburg due to more kids being from there.

Stella ella ola
clap clap clap
say es chica chica
chica chica slap
go, slow,
go slow, go slow
1 2 3 4

I am literally so intrigued by where this came from and how much its changed regionally. All of these playground folklore games are so cool: Miss Mary Mac, concentration64, theres a place on mars, spiders crawling up ur back, etc. Like how adorable that children transmit these things just through verbal history onto the next generation and apparently across the world according to this thread. I hope that this is still happening out there these days