Earlier in th Fandomfreakout post here was something mentioned about Himchan being drugged by a fan. Since there hasn't been a post yet, here the details.
This is a Pann post nd none of this is confirmed so just keep in mind that it's a rumor
A netizen uploaded a screencap of a conversation she had with a friend who's friends with a B.A.P. sasaeng fan. In an effort to get their attention, she had given Himchan a cup of coffee mixed with constipation meds
"When B.A.P. was promoting 'Power', she said that she gave Himchan a cup of coffee with constipation medicine mixed into it when she saw him on their way to work. I wondered if he was known to have constipation issues or anything else that could possibly warrant such an action. She waited for him to leave the broadcast hall and asked if he drank it and he said he did. When you watch B.A.P.'s performance that day, his face looks completely ghost white, he messes up his choreography, he looks unable to find his balance, and he finally falls over, hitting himself on stage equipment. He looked to have injured his back but went back on stage and kept performing. The crazy girl reacted to this saying she thought it was fun and that she's going to have something worse planned when they make their next comeback."
And this is the Music Bank performance (120511)
source: netizenbuzz, Pann, CapsuleHD21 n chicken-jae@tumblr
I've heard about anti's drugging idols' drinks, but never a fan...