And such a cute Firetruck you are, Joe! I can just imagine you in your deep red uniform and that fire hose? Well, is quite elegant.
I'm spinning that old 33 disc of Jim Morrison and the Doors on the turnstyle right now. Come on, Firetruck, light my fire... /sarc
IT or HeShe = the proper way to address or speak of these strange folk. Allow the two of THEM to work it out between themselves. To avoid any embarrassment - turn on your heel and swiftly walk away giving the two some privacy.