Fold the end of the rope to form a small loop near the end.
Hold the loop in place with one hand.
Wrap the working end around the standing part to form a second loop.
Pass the working end through the loop you created first.
Pull the working end to snug the knot around the standing part.
Leave the loop on the end loose enough to slide, creating a slip knot.
Test by pulling the standing part to tighten and pulling the working end to release.