Future Ted: [v.o.] But then Marshall really started thinking about Kevin's theory.
[alternating flashbacks between Marshall's father and Lily:]
Marvin Sr.: [eating sandwich] Midnight snack.
Lily: [eating sandwich] Midnight snack.
Marvin Sr.: [rubbing his foot] Oh, yeah.
Lily: [rubbing her foot] Oh, yeah...!
[present:]
Lily: I am gonna rock... your... [Marshall sees his father] world.
Marshall: Yay.