Mother Monster is not to be messed with! Lady Gaga has posted a reply on Facebook after South African zef rappers Die Antwoord poke some serious fun at her, in their new video, Fatty Boom Boom. The singer, who is touring South Africa next month and December, wrote, "i fink u freaky but you don't have a hit. hundred thousand tickets sold in SA. #thatmyshit i guess its not a good idea to tell someone you're a fan. never mind! we get it, you're not a little monster. WE GOT IT.!" Die Antwoord replied to her post by boasting: "lady... even tho u r 'larger' than us... we still cooler than u... plus we don't have prawns in our private parts... haha!"