"Wagon" is one analogy.<quoted text>Lol!
I think he fell off the AA wagon and bumped his head.
The correct analogy has to do with the foundation:
1Cr 3:11 For no one can lay a foundation other than that which is laid, which is Jesus Christ.
Luk 6:49 But the one who hears and does not do them is like a man who built a house on the ground without a foundation. When the stream broke against it, immediately it fell, and the ruin of that house was great."
2Ti 2:19 But God's firm foundation stands, bearing this seal: "The Lord knows those who are his," and, "Let everyone who names the name of the Lord depart from iniquity."