BTOB's Sungjae had the cutest response to Peniel who publicly called out his grammar mistake. 
So, Sungjae recently tweeted photos from Singapore with the caption, "Singapore in Sungjae!" Fellow member Peniel, who's originally from Chicago, pointed out the mistake with a tweet, asking what he means by ''Singapore in Sungjae."
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Sungjae tweeted back with a response and the two members exchanged a hilariously cute conversation.
Sungjae: Yes it's mean singapore melody is in my mind
Peniel: On your heart or in you rmind???
Sungjae: In my pocket
Peniel: Pocket?! Wow!
Sungjae: Hey! Stop english difficult
This must be why BTOB is known to be the funniest (and also one of the cutest!) K-Pop boy groups!
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Nice post, thanks for sharing.