The diamond heart thing is funny.. Haerin did it while all the others were doing normal hearts... the others were telling her to do a normal heart. It went viral now they all do it :) This was on Haerins Birthday. Theres also funny clips of minji sneakily inhaing helium here because the others especially hanni get mad at her when she does it... she also did it on her own birthday and Hyeins as well.. search for minji vs helium and i think all 3 clips should come up :)