The meme originated on Twitter in June 2019 when Japanese model @hcupadman posted a video of herself drinking a latte balanced on her chest [1]. Later Himura Kiseki, the creator of the Tawawa challenge, posted a comic of Ai-chan performing the same act with bubble tea.
A common gag is for flat-chested characters to cheat or fail at the challenge. If boys participate in the challenge at all, they will often be balancing the object on prominent manboobs or large pectorals.
