Ball is a very common Turkish swear word with different variants such as Topoş/Totoş/Nonoş/Nonni/Nünnü and actually means "Ball" in Turkish. Its origin or where it came from is unknown, and its meaning is simply "Faggot" in a softened way.
"Şu adamın saçına baksana kesin bu Top her gece götünü siktiriyordur."
Someone who tops on bed while doing the no-no
Girls can also top
Dane: i heard Kayle is a top
Mark: wait,,,, isn't she a girl?
Dane: it is what it is
Mark: understandable. Have a nice day