Yabn el

Yabn el is arabic and means

Son of...

The female version of this phrase is

Yabent el...

But usualy pronounced

yabet el... or yabit el... Which means

daughter of...

You can put anything bad behind it and it will turn into an insult.
For example:

Yabn el sharmuta

Yabn el khawal

Yabn el 3abita

Yabent el kalb