A best bet are the Joe Boxer Men's Griffin Board Shorts (pictured) for $2.39 after the above code. With $5.55 for shipping, that's $20 off and the lowest total price we could find. They're available in sizes 30 through 44.
Kmart offers a large selection of Joe Boxer Men's Swimwear in 49 styles for $2.99 each. Update: Plus, apply coupon code "KAPPAREL20" to knock them each to $2.39. Shipping adds $5.55, or opt for free in-store pickup. Even with shipping, each style is at the lowest total price we could find. Sales tax is added where applicable.
Updated October 8, 2011