To someone

The expression "dowr l flan" is slang for calling someone on the phone.

One possible explanation is that it originates from when phones still had rotary dials, and you therefore needed to rotate it to make a phone call.

With someone

"Dowr m3a flan" (literally, rotate with someone) refers to the act of giving them money.

Other alternatives include: "dbr 3la flan" (ضبر على فلان), or "7l9 3la flan" (حلق على فلان)