Hey, Hey We're the Hartmans - S1.E18

Cory's band (Monk Fish) gets a gig @ Maynard's Place. Except that their rhythm guitarist got grounded. So Kirk fills in & the band thinks he's an awesome guitarist than Cory.

Cory holds his feelings in, but during a riff performance, he goes backstage & tells Kirk he's not part of the band @ all.