A simple super mushroom would defiantly work, But yes I do wish to see him be thrown around all goofy like during the Jr fight >:)

Well in games Bowser can tank many fireballs, 15-30 depending on the game I think, while Mario takes damage after getting hit by one fire bro. So the threshold itself would scale with individuals, and so 'door stuck' isn't near strong enough to hurt the big guy.
Thanks for coming to my TED talk

Of course >:3

tyty! i also have this alt of it :p