You can't pretend to be a disciple. You can't just look the part or play the part and pass yourself off as a disciple. Discipleship doesn't happen from the outside in.
Just ask Judas.
True disciples are transformed by saving faith in Jesus. They live in a faith relationship with Jesus and walk by faith. They deny themselves and take up the cross of sacrifice and obedience. They live lives that show the real power and grace of God.
There is no tricking Jesus about discipleship. He has seen the real ones and is not fooled by fake disguises. He doesn't look on the outward appearance but gets to the heart of the matter.
Tricking Him is no treat.