Sorry if this is a repost. I just found this video from 2016 that went viral on Twitter. It has 3.4 million views, 36,000 retweets and 45,000 likes. A girl recorded her dad tickling her mom while her mom was wearing a face mask, which meant she couldn't move her face while laughing. At the beginning of the video, you can hear the dad telling the mom to say "please" (the context isn't clear) apparently under threat of being tickled if she refused, and so the mom says "please", but the girl recording wants her dad to tickle her mom anyway, so he goes ahead and tickles her 
This is the video: https://twitter.com/meccamaulana/status/810917315361603584.
This is the video: https://twitter.com/meccamaulana/status/810917315361603584.
