Megan films sheepish shots of Drake and Josh while Susan, Drake's
current girlfriend, flirts with Josh. When she kisses him, Drake comes
in and she makes him think Josh is the one hitting on her. As a
prank, Megan films this and puts this, along with a bunch of other
embarrassing shots, into Drake's music video project, which
unknowingly helps Drake and Josh by exposing Susan as the two-timer
that she is.