Boat goggles describes a lapse in judgment or lowering of standards due to being on a ship with the same few people for an extended period of time. One with boat goggles might consider hooking up with someone on a ship that on land they would not have found attractive. In other words, rose colored lenses but for the cruise line industry.
“Yeah I definitely had boat goggles because he is not cute at all”
“Oh it’s just the boat goggles, they’ll break up as soon as they get back on land”