Who's training who?

My sister is training one of our dogs for rally obedience and things are going pretty well, I think. Our Molly is a bit of a handful, but my sister really knows her stuff.  

But I must tell her about the tweet I saw today:

Me: wow these meat chunks are a great tool to finally train my dog to come back

My dog: wow coming back is a great tool to finally train this idiot to give me chunks of meat

— Jimmy Thomson (@jwsthomson) November 23, 2019