She's apparently not in the mood for an April Fool's joke.
Putting together the ′pretty boys′ from different groups, Boy’s Day will include BTOB’s Min Hyuk, NU’EST’s Ren, VIXX’s Hong Bin and A-JAX’s Seung Jin. They will be parodying Girl’s Day from head to toe, including hair and make-up, in order to present their own version of Something.This is the Girl's Day performance they are mimicking: