When Barney is forced to pick sides in a fight between Robin and his mother, Lily coaches him on how not to ruin his relationship. Meanwhile, Ted and Marshall get into a dispute over wedding gifts and thank-you notes.
Elenco:
Cobie Smulders
,
Josh Radnor
,
Neil Patrick Harris
,
Alyson Hannigan
,
Jason Segel
,
Bob Saget
,
Britney Spears
,
Candice Accola
,
Cristin Milioti
,
David Henrie
,
Lyndsy Fonseca
.
