This is the term given to Egyptian women that stand on the corner of "Gam3et El Dowal" and "Sudan Street". They are not prostitutes, but will spend the night with you if you offer them 200 L.E. or more. Yassos are usually horny and overweight. They have very thick, rug-like hair.
In order to spot a Yasso you must go to the corner mentioned above, honk three times, flash your car-lights twice, and open the door; She will then jump in out of nowhere.

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.