The pilots in the two heavies would rather be flying the bug smasher and the pilot of the bug smasher would rather be flying the heavies. It’s a full circle type of thing.
Tower tells Plane #1 "Standby, short delay for IFR clearance". Pilot in Plane #2 immediately keys mike, puts on his best low-voice Plane #1 Heavy impersonation & transmits on Tower "Why doncha go right ahead and let my little buddy behind me have the runway".