Aw, poor Lovelyz!  Well, Sunggyu is known to be quite the gramps.

On the January 6 airing of MBC Everyone's 'Weekly Idol,' they complained about their label mate senior, INFINITE's Sunggyu while Sunny was the temporary MC of the day. On this day, they stated that Sunggyu was severe when it came to nagging.

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At this, MC Defconn gave Baby Soul a chance to counterattack Sunggyu's nagging, but she was unable to readily open her mouth.  At this, Sunny provided an example, suddenly yelling, "Hey, Heechul, you won't be able to marry if you're like that.  Until when are you going to be like that?"  Poor Heechul, but it worked!

Gaining confidence, Baby Soul said, "Sunggyu, I have debuted now, too, so please stop nagging, and I think you should worry about your own future..." making everyone laugh as her voice got quieter and quieter.