Boxer Rub
A method of stimulating the penis through the fabric of underwear.
How to do it
Keep your underwear on while you are erect. Use your hand to rub the head of the penis through the fabric. You can move your hand in an up-and-down motion or use circular movements over the tip. The fabric provides a layer of texture between your hand and your skin. Once you reach climax, change your clothes and wash the fabric.
Why it works
The fabric creates a unique type of friction and sensory input that differs from direct skin contact. Stimulating the penis through clothing can also provide a sense of containment and pressure, which focuses the sensation on the most sensitive areas of the glans.
Everything here is optional. Go at your own pace. Read about safety.