When it was revealed that Robin’s secret was actually her past as Canadian teen pop sensation , both men were technically wrong. However, Barney prematurely slapped Marshall, leading to the appointment of the world’s first Slap Bet Commissioner : Lily Aldrin. The Role of the Slap Bet Commissioner
Throughout the series, Marshall used his slaps to punctuate major life events and holiday traditions: HIMYM: 8 simple rules - What's Alan Watching? Slap Bet
The Legendary Slap Bet: A Guide to the Ultimate Sitcom Stakes When it was revealed that Robin’s secret was
When Barney slapped Marshall prematurely, Lily granted Marshall "slap justice". both men were technically wrong. However
You can't have a civilized slap bet without oversight. As Commissioner, Lily’s job was to: Rule on who actually won the wager.