The haft also went in after the blade - As the instrument was very short, and Eglon very corpulent, this might readily take place.

And the dirt came out - This is variously understood: either the contents of the bowels issued through the wound, or he had an evacuation in the natural way through the fright and anguish. The original, פרשדונה parshedonah, occurs only here, and is supposed to be compounded of פרש peresh, dung, and שדה shadah, to shed, and may be very well applied to the latter circumstance; so the Vulgate understood it: Statinque per secreta naturae alvi stercora proruperunt.

the dirt came out. or, it came out at the fundament.

"This Then is the Message which we have Heard of Him, and Declare unto You, that God is Light,"
1 John i. 5.--"This then is the message which we have heard of him, and declare unto you, that God is light," &c. The great design of the gospel is to make up the breach of man's joy, and open up the way to the fulness of it, and therefore it is the good news and glad tidings of great joy, the only best message that ever came to the world. Now it shows unto us the channel that this river of gladness and joy runs into, it discovers what is the way of the conveyance of it to the soul, and what are …
Hugh Binning—The Works of the Rev. Hugh Binning