Maroon 5 showed up uninvited and played impromptu shows for a hoard of LA weddings last December. Rude as hell.

"It's December 6th, 2014. We're going to drive across L.A. and hit every wedding we possibly can," Adam Levine says as the music to "Sugar" starts. Most shocking to see is how couples fawn over the band who interrupted their nuptials.

Like these two:

Unacceptable.

[H/T Billboard]