- Corpsing: Neil Patrick Harris doing back-up to Jason Segel visibly causes the rest of the cast to not hold their laughter.
http://tvtropes.org/pmwiki/pmwiki.php/Trivia/HowIMetYourMotherS3E09Slapsgiving
FollowingTrivia / How I Met Your Mother S 3 E 09 Slapsgiving
Go To