In the song 'The Big Bang' by Rock Mafia, the big bang is juxtaposed by it's upbeat and almost relaxed tune of a boyfriend getting a possible sexual intercourse (i.e. a bang) from his girlfriend with a tragic opening scene of the boyfriend witnessing his girlfriend involved in an accident where a van banged her car.
I'm gonna take what you're giving
'Cause I know you're willing
To take me all the way.
You got me right here combustible.
And I can't wait to finally explode.
In the first verse, he sings metaphorically about his willing girlfriend who is sexually turning him on to become 'combustible'. He is anticipating an orgasm where 'I can't wait for finally explode'. In the video, the lyric takes a literal sense where he has a flashback on a car ride they had together. They were enjoying each other until they kissed and he was then brought back to the present of the accident scene.
When all the stars collide
In this universe inside.
The big, big bang [3x]
I don't wanna be
Sometimes I feel so isolated, I wanna die.
And I'll take it from you, if you got it every time,
So, baby, bring your body here next to mine, next to mine!
No, I don't wanna dream!
I just wanna live it!
So, baby, let's not miss this thing!
As of many music videos that make no complete sense to the lyric nowadays, it is not the intention of the video to aid the comprehension of the lyric. It is merely a play of opposing ideas on the concept of the big bang: reality vs illusion; the present vs the past; joy vs sorrow; the new vs the old; the yin vs the yang. It just sets your brain spinning for the cognitive dissonance it elicits.