WATCH: Holly Willoughby gets her words mixed up with hilarious consequences
They were talking about welly wanging.
It was Throwback Thursday on This Morning today which saw TV presenters Ben Shephard and Holly Willoughby remembering the time they were 'welly wanging'.
Showing a clip from the programme exactly a year ago today, Holly said she had "never wanged a welly", before launching a bright pink kids' welly across the studio and promptly knocking her target - a gold pineapple - off the table, smashing it into pieces.
© YouTube/This Morning
Skipping back to the present day and Ben asked his co-host if she had hit anything else since last year, to which she replied, "funnily enough I haven't willy wanged since then."
This simple slip of the tongue was enough to set the pair off into hysterics who were struggling to contain themselves on live TV. Holding on to Holly for support Ben went bright red and collapsed into a fit of giggles, then he finally composed himself saying "I however haven't stopped"!
WATCH: Holly Willoughby and Ben Shephard in hysterics »
Guests on this morning's programme included Kerry Katona, Trinny Woodall and Melanie C.
Holly and Ben asked the former Spice Girl about her new single and album which has been described as her most honest yet. They also quizzed her on why she won't be joining the other girls for a Spice Girls reunion to which she replied,"for me we are like a jigsaw puzzle and if there’s a piece missing it’s not complete. We’re not a band of interchangeable parts."
WATCH: Mel C talks about her new single, the Spice Girls and Victoria and David Beckham »
Throughout the interview Mel C's accent seemed to fluctuate between her normal Scouse accent and a unusual posh accent which many viewers picked up on taking to Twitter to remind her of her Liverpudlian roots.