This is a part of song lyrics.
What does "roll over" mean in this song???

[Lyrics: Gabry Ponte, LUM!X, Prezioso - Thunder]
Down the river, we're drunk and all of our thumbs went up in the air
Sunken in the wind, listening to the thunder rolling over and over, we
Down the river, we're drunk and all of our thumbs went up in the air
Sunken in the wind, listening to the thunder rolling over and over
We down
We're getting on fire
We're raising up higher
The bottle is up
We're over the top
It's time to get vile
The time our life
Is happenin' now
We're out of control
Together we're rolling, over and over, we