The Giza camel and horse 'included' ride
Pyramids of GizaVery commonA ride is offered cheaply or as included with your ticket. Once you are on the animal and away from the entrance, a much larger sum is demanded to be brought back down.
How to avoid it: Agree the total, in writing on your phone, including the return, before mounting. Better: walk. The site is walkable and there is an official ticket-only entrance.
Sources Egypt Ministry of Tourism and Antiquities r/Egypt scam threads