Screen Rant

  • The slap bet is one of the best long-running gags on HIMYM. 1 / 8

    How I Met Your Mother vertical

  • It stemmed from the Robin Sparkles secret. 2 / 8

    How I Met Your Mother vertical

  • Marshall was allowed to slap Barney 5 times for winning the bet. 3 / 8

  • He carried out the slaps throughout the season. 4 / 8

    How I Met Your Mother vertical

  • Marshall also invented Slapsgiving. 5 / 8

    How I Met Your Mother vertical

  • Lily, the slap bet commissioner, awarded Marshall three more slaps. 6 / 8

    How I Met Your Mother vertical

  • It brought Barney's total to 8 slaps. 7 / 8

  • The last one came during Barney and Robin's wedding. 8 / 8

    Cobie Smulders How I Met Your Mother Vertical