Wayne and Garth talking to the security guard.
In Wayne's World, this security guard was working backstage at Alice Cooper's concert when Wayne asked him if a large limousine parked nearby belonged to Alice. The guard told Wayne that the limo belonged to Frankie Sharp of Sharp Records, and gave him an awful lot of information about Mr. Sharp that proved very useful later. The guard's only purpose in the movie is to provide this information.
The security guard was played by the late Chris Farley, who is sadly missed.