I'm very sorry that I went

Into your room and accidentally

Stole and ate your secret stash

And borrowed £50 in cash

(Though, to be fair, you would've spent

It all on biscuits during Lent)

But anyway – I'll pay you back

Soon as your diet's back on track

So really, Mycroft, this is me

Just stating my apology

And wishing you a happy sulk

Devoid of comfort food in bulk

Best wishes and most loving care

From Sherlock, thief extraordinaire!