The Adventures of Engine Puppy: Volume 1, Issue 3
Text of this comic: Engine Dog rejects Engine Dogette
Engine Dog rejects Engine Dogette's advances because she's an ugly bitch. Engine Dogette drives away to cry while Engine Dog barks at her to leave his home. Engine Dogette goes back later that night with a bunch of alcohol and gets Engine Dog drunk before she pushes him on his back and mounts him. Engine Dogette rapes Engine Dog, but it's technically not rape because she is Engine Dog so it's just masterbating, probably. After sloppy seconds, she disappears into the night.

Engine Dog is my Hero!