A freeloader in Persian is called a parachutist!
In Persian, if you call someone a chatrbaaz چترباز (parachutist), figurively you’re calling them a freeloader.
If you say someone has opened their parachute (chatr baaz karde چتر باز کرده), figuratively you mean they are freeloading.
In a more informal and also more common way, people would just say chatr shodan چتر شدن (to become a parachute) to mean that they’re gonna freeload. And would simply call freeloaders ‘chatr’ چتر (meaning a parachute).
A: mishe emruz ham baa maashin to berim? (Can we go with your car today, again?)
B: mikhaai baaz chatr shi? (You wanna be a freeloader again?)