Why did Taemin's face get red when talking about sex?!?!

SHINee's Taemin's face got red while talking about sex.

While Onew and Taemin guest starred on the January 31st episode of SBS's "Shin Dong Yeop's 300", when the question "I've talked about sex with my parents" came up Taemin commented, "Wouldn't that be really embarrassing? It seems awkward." Onew said "If you started talking with them since you were young, it would help a lot."

MC Shin Dong Yeop then asked, "Where have you gotten your knowledge about sex?" Onew replied calmly, "I mostly learned at school" but Taemin's face became red and laughed in embarrassment.

On another note, Onew and Taemin risked around $5000 to bet that the number of people in the audience who've talked about sex with their parents would be from 60 to 90. The actual number in the audience was 92, so they were eliminated.

source: newsen & eijisatoshi | translations by filmsession @ omona_prection