Mohdi fahka is another way to say "Mother fucker".
Because Africans can't say "Mother fucker"
It was originaly said by Aries Spears at "Hollywood Look I'm Smiling - Weed and National Geographic." on 2011.
African No. 1 " Why arent you playin wit da lions?"
African No.2 " I ain't fukin wit dat mohdi fahka!"