On the 23rd of December, everyone has to give a banana to a friend or stranger and say "do you want a banana", in reference to Tally Hall's "Banana Man".
Meghan: "I just remembered, it's Give a Banana day!" *gives banana* "Do you want a banana? This banana for you."
Carl: "Oh why thank you." *takes banana*
On 18. October you have to eat atleast 1 banana... So you can challenge your friends to eat a lot od bananas and then call them "Minion"
Jake: yo bro, go eat a banana
Mike: nah, no thanks
Jake: you have to cuz of A national eat a banana day
banana soup day is a day on 23th on December where you need to drink banana soup with your whole family
hey joe is banana soup day
joe:oh time to start drinking