Male dress code in Jordan
Visitors who wear shorts on the street give off about the same vibe as people who roam around Baltimore or Bournemouth in their underwear. In any environment, including the city, the country, and the desert, long, decent pants made of light cotton, denim, or canvas are a need (not flimsy, brightly patterned beach-style trousers).
If you must wear shorts, choose loose, knee-length styles rather than tight, athletic styles. Underwear is any shirt that doesn't cover your shoulders and upper arms. A buttoned shirt tucked into pants sends a stronger statement about the priority you place on cultural awareness than wearing a T-shirt, which is permitted. Jordanian men never, under any circumstances, go bare-chested in public.