Had the stonking horn this morning...

Oh Dude... I could wake up to your horn every day
 
The stonking horn! You know, the horn but one which was particularly stonking. Well it was to me anyway ;-)
 
Ha, yes it is. It's a superlative word, when something is particularly impressive or good.
 
Channelled him eh? Not heard it called that before but am sure he'd love that! ;-)
 
Funny, but in all the English lexicons I've checked "stonk" is an artillery bombardment. ???

I guess that's where it comes from! Like something could equally be 'banging' or 'smashing'.