This word is commonly used by Rwandan youth to say "am going to sleep or to sleep".
So, pongi is a ligala word that means sleep and kurya means eating in kinyarwanda but its usually used by many as "to"(in itself is a slung).
Person 1: ko usa nkunaniwe bro?
person 2: mvuye kurya pongi bro!
That man Jared is a pongy wanger. He absolutely wangs (stinks)
His name is Rooty Tootie Pongy boy
Rootie tootie Pongy boy come here immediate
Rootie tootie Pongy boy Stop trying to mount pip