I was pretty pleased to come across this. It's practical joke played on babin' English TV presenter Fearne Cotton during her appearance on a variety show.
The prankster sets it up so it seems they are playing a game. She has to hum a song while she holds milk in her mouth and the other guests have to guess the song.
It's revealed at the end as a joke on her to make her look like she's gargling cum.
Outstanding!
It's at www dot youtube dot com /watch?v=sl2a_QgdA3A
OR search for the title which appropriately enough is
Fearne Cotton gargling cum.............(really milk)