I think I remember this exact scene, but it's not a manga but old manhwa I think. So probably not what you want or I probably mistaken, but let me recheck.
I know they do it in one of the later chapters/bonus
https://www.mangago.me/read-manga/kabukichou_bad_trip/
I found the manhwa I'm thinking about, but not sure if this is the you're looking for?
https://www.mangago.me/read-manga/star_x_fanboy/nbt/br_chapter-144465/pg-1/
Yess! It was Kabukichou bad trip, thank you!! But I really really loved star x fanboy when it came out and didn't know about that extra so thank you to sweetcaramel too!!
Trying to find a manga with the chapstick game in one of the later chapter (put on flavored chapstick, kiss, other person guesses the flavor) im guessing it was in a newer manga cause I only read a week or two ago... the character who started the game got upset when the other was focused on the game and not on kissing. Its like nothing to go on but if anyone knows I'd be so happy!! I was so surprised to see chapstick game in a manga!