Well there can be tnt.
I assume you mean TNT. All you have to do is hit it.
Dynamite ! , & TNT .
Yes. By lighting TNT with fire, (lava, flint and steel), the TNT will start to blow up.
People are stupid enough to stuff TNT into it ...
If you mean classic (Which I think you do) It wasn't made to explode (as is: It can't)
There's currently no way.
It is physically impossible to make your pen explode unless you use TNT.
Explodable (explode-a-bull)
save the tnt and explode boombot to the portal
There are probably mor ways but with TNT or other explosives...
you can with different of stuff eg: lava, fire charge like those thing. You can redstone power to set off a TNT