Time for some classic X-Men beefcake featuring their fearless leader. In Uncanny X-Men#148, Cyclops and his then girlfriend Lee Forester (this was post-Jean death, but pre-Madelyne Prior) are stranded on a uninhabited island after being knocked overboard their fishing trawler ofter a freak storm (long story). Anyhow, they've been stuck on the island for several issues hence the castaway attire. Love the matching cutoff jeans.
(edited on 6/18/2016 - Replaced images with better quality scans)