Best.ever.

The over-used phrase that ditzy teenage girls use to talk about a "super fun night" or "hilarioussssss pictureeee", not realizing that it makes them sound like they have 8 brain cells. Oftentimes, it's combined with other words to make phrases such as, 'BEST.PICTURE.EVER.' Also, 'BEST.NIGHT.EVER" can be seen and/or heard quite frequently.

Can be mistaken for 'BEST EVERRRRR' which is essentially the same thing, just a more obnoxious and emphatic version.