Making out around others.

I want to know if I am being inmature about this.

The other day I was in a car with 4 people, only friends with one of them. Two of these were boy-girlfriend, they got into a 'comfortable position' cover with I think was a jacket and start what we all knew was making out. They apparently don't get the chance to see eachother as freely as needed.

My point is, do you think it's ok to go for a make out session when you are around others?

I honestly don't! Seems a little childish to me. I would be considering how that can make others feel uncomfortable and don't even understand how they get turn on in that escenario.