Unlike, say, antidisestablishmentarianism, 'supercalifragilisticexpialidocious' isn't an actual word, what with it being made up by Mary Poppins songwriters Richard and Robert Sherman - but that doesn't mean it isn't ridiculously good fun to say.
Unfortunately, it's also really rather hard to say, which makes asking a school of Cambodian kids to say it out loud is a little unfair - if a little wonderful.
The idea came from two volunteer teachers called Lucy and Mat who have been in Cambodia for three weeks helping out. This viral video they made at the same time? Well, that's just a little bonus.
It reminds us - ever so slightly, at any rate - of the D-Pan charity video where a group of deaf children 'sing' The White Stripes' We're Going To Be Friends, which we love very much. So much so, in fact, that we're putting it here below for you to check out. Seriously, it's ace.