The debuts of boy groups MBLAQ and B2ST have become a hot topic among netizens!

MBLAQ made their debut on M! Countdown on 15th October performing their hit song "Oh Yeah" while B2ST just debuted on Music Bank yesterday singing "Bad Girl".

Besides,i notice something in common when watching the debut performances of both group,there is a member in respective group who lifted their shirt up when performing.Using a new term i have just learned these few days,they are showing off their abs!

Members who are showing off their bodies are Lee Joon of MBLAQ and Ki Gwang (a.k.a AJ) of B2ST as shown in the pictures above.

I think you should watch the performance above to see the part where they showed off their bodies!!

B2st's performance on Music Bank

Pause at 01.01 !

MBLAQ's Debut!

Pause at 02.08!