It usually occurs when you are trying to expose someone's inability to perform a certain action because you are already aware that he/she can't get it right.
You are giving a mind test when you give a flimsy excuse and ask someone that has never driven a car to take your car key and drive you back home.You have already known the answer before asking that person to drive you home.
I don't care that, that dude talks about sex a lot but he is always talking about the most nasty dirtiest shit he can think of....what a fucking mind sleeze.
To mentaly categorize someone as a 'dog' whilst verbaly leading them to think of them self's as the complete opposite
Girl: "hey babe do you want to come to the servo with me"?
Boy: "nah I'll just wait here for you"
Girl: (sigh) "ok ill just go by myself then" ("thinks to self:"ok I'll just go by myself then Dog" )
Girl tells friends on way to servo: " see that look I gave him full put him on the mind dog"