What does it mean when some people say that big bang is not an explosion?
Explosion: a rapid increase in volume and release of energy in an extreme manner
...Isn't it technically what it is? Is it a meme?
It expanded in a bell shape.. hence the pic.
Our universe, is right now sitting at the end of the 'bell' edge on.
The current state of cosmologay is a little tragic with memers like Tyson and Cox, so that anyone studying it is referred to as a 'bell-end' in an affectionate manner.