The adorable girls of TWICE revealed their birthday tradition on the November 10th airing of 'Kim Shin Young's Hope Song at Noon'.
During the talk, it was revealed that Momo's birthday was the day before. Kim Shin Young then asked Momo, "Is it true that you received kisses from your members as presents?" Momo explained, "I was eating stick cookie with Mina, and Sana bumped our heads together. It accidentally happened. We really kissed."
However, kissing each other was a normal thing according to TWICE. The girls explained that it's their tradition to give the birthday girl a kiss. TWICE said, "It started on Tzuyu's birthday," and Tzuyu commented, "I'm still waiting [to receive kisses] from a few members."
DJ Kim Shin Young then recommended that Momo receives the kisses since it was her birthday yesterday. TWICE then got up and gave Momo much love with sweet smooches.