Gotta watch for my wrist and a watch for my paps

Meaning

He’s rich enough to buy fancy things for himself and his family. The word “paps” alludes to the word “pop” in the last line, as both can mean father.

To help improve the meaning of these lyrics, visit "Castles" by B.o.B (Ft. Trey Songz) Lyrics and leave a comment on the lyrics box