(S05EP06) Despite their best efforts to be the perfect couple, Barney's know-it-all attitude gets him in trouble with Robin and they are forced to ask Marshall and Lily for relationship advice.

Réalisation :
Pamela Fryman

Scénario :
Robia Rashid

Avec :
Josh Radnor (Ted)
Alyson Hannigan (Lily)
Neil Patrick Harris (Barney)
Jason Segel (Marshall)
Cobie Smulders (Robin)
Sam Stephanski (Phil)