A father recounts to his children, through a series of flashbacks, the journey he and his four best friends took leading up to him meeting their mother.
In season 4 when referring to the child he hired to act as his son, Barney makes a comment how child actors were better in the 80's. Neil Patrick Harris who plays Barney was himself a child actor in the 80s.
Lily:
Hey, nice shirt, Ted. Is it yesterday already?
In the Halloween episode in season 1, Robin says she never played any team sports. Just Tenis. However in a later season she mentions how her dad caught her kissing a hockey team mate.
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