Hardly an awkward moment. It would be awkward if they were listening to their headphones while using the Hoover in an inappropriate way, only to look up and realise that their parents/grandparents/siblings had caught them in a difficult to explain situation. Not turning the Hoover on is just a pain in the ass.
Yeah, or that awkward moment when you see a gag on the TV show Fresh Meat, then post it to your status a couple of days later as if it was something that actually happened to you. Lame, Paul. Very lame.