1.A creepy guy who has a thing for "stews" also known as flight attendants,female variety. He is usually remarkable for his porn mustache and clothing chiefly made from petroleum-based material.
2.A loathsome creature most often found on aircraft headed for all-inclusive resorts.
Flight Attendant to colleague: "Watch out for the skeevyguy in 25C near the lav- What a jump seat sniffer!"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.