Do You Wear Underwear with Swim Trunks? – WAMA Underwear
Fluro Yellow Swim Trunks V2 - 5"
Are You Supposed to Wear Underwear Under Swim Trunks? – Le Club Original
No guy should wear board shorts — here's the swimsuit you should wear instead
Amazon.com: Idgreatim Men's Swim Trunks with Boxer Brief Liner 7" Army Green Compression Board Shorts Summer Beach Quick Dry Lightweight Swimwear Shorts for Surfing Pool Party M : Clothing, Shoes & Jewelry