what master bait joke mean?

[todisgod]

someone tell me dis joke yesterday and it confusin they say first that all thing that thos thing eat is thing bait then they ask me what giraffe eat then monky eat then zeebrah eat then master eat i saidd bait all time what it mean plz respond i rly confus plz plz pzlzplz plzz help!!!!11
yesss!!! i know master eat master bait, gibe me answers!!!

 

[Unregistered]

masterbait= masturbate. look masturbate up.