Eunhyuk was in for an unexpectedly rocky time when he appeared on the February 12 premiere of MBC Every1's bachelor romance variety program 'Shin Dong Yup's Bachelor Party' as MC Shin Dong Yup accidentally slipped IU into the conversation.  

Previously, Eunhyuk and IU were involved in a scandal when the latter posted a picture of them together atop a bed or couch onto SNS by accident.  With Shin Dong Yup's remark, Eunhyuk was unable to hide how taken aback he was.

Shin Dong Yup said that bachelors' dream was to get an ambush kiss from a woman, giving a hypothetical scenario, "It's a special program.  You're introducing people, but there's a girl you like, an idol or an actress."  He pretended to call out people on the show, at one point, yelling, "IU!"  When he saw everyone's startled reactions, especially Eunhyuk's, he realized and quickly said, "It's because I personally like IU."  

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Later on, as if he were going to say IU again, he yelled, "Ayumi!"  to everyone's relief. Eunhyuk then mentioned lyrics from Ayumi's song, saying, "Isn't she a pretty woman with a small butt?" bringing laughs with his quick wit.