Some people do not care for winter wonderlands, silver bells or "merry" anything. Some people are bitchy and bitter, perpetually pissed-off or generally annoyed. What we have here are gifts for Grinches, Scrooges, the enraged and the ill-tempered.
When a person coughs off-camera during this interview with Aguilera, the pop star drops some serious bitchery, like she's Madonna or something. It's a pretty outsized attitude, particularly coming from someone who's been usurped by the likes of Ke$ha.