Another of my favourite How I Met Your Mother episodes is this one.
"Swarley"
"Swarley"
When Chloe the barista in Costa Coffee accidentally writes Barney's name as Swarley on his coffee cup, and then Ted, Marshall and the gang all start calling him Swarley, much to Barney's annoyance.
Some of the names they call him are so funny.
Swarls Barclay.
Swarls.
Bob Swarleyman.
Swarlos.
Swar-lay
Swar-waitforit-ley.
Plus... Lily and Marshall get back together :)