Separatec7 Pack Men's Boxer Briefs Breathable Soft Cotton Underwear Colorful Everyday Boxer Shorts Multipack with Supportive Dual Pouch

As some have mentioned the sizing, should I buy a size smaller in the briefs?

size chart - why has Amazon stopped giving a size chart link?, on this and calvins, both now only says "from your past purchase your recmd size is....

Should I buy a size smaller in the briefs. I normally wear a medium in most brands.

Is it just the old boy that goes through the hole or the whole meat and 2 veg?