for fans of reversed "substitute"

[Arnold M. Zwicky]

the 10/27/05 "Bizarro" cartoon (by Don Piraro) has a waiter taking an
order from a pig.  the pigs says: "The special sounds good, but can I
substitute the pork chop for a fried chunk of your left buttock?"

this is reversed "substitute", which we've mentioned here before:
"substitute OLD for NEW" instead of the older version "substitute NEW
for OLD"  ("substitute OLD by/with NEW" is the intermediate stage, in
case you've forgotten the details).

arnold