Look Hard: When Yakko and Dot are looking at all their fan mail, Wakko asks, "Isn't any of it for me?" Before Ralph pours the bag into his lap, some of the letters on the floor have "Wakko" written on them.
(The Warners disguise themselves from the crowd using masks ala Jim Carrey in The Mask, then do wolf-whistles and wild takes at the hot ladies in the crowd, then pull the masks off.)
Yakko: And we did all that without computers!
Elmyra Duff (from Tiny Toon Adventures) makes a cameo appearance in this cartoon short.