Backpocket knowledge consists of useless facts that serve no purpose but are still interesting to know nonetheless
Group of smart people: *having an intense conversation about the universe*
Bob: Leaves are green because they have chlorophyll.
Group: Thank you bob for sharing your backpocket knowledge with us.
Bob: Leaves are green because they have chlorophyll.
Group: Thank you bob for sharing your backpocket knowledge with us.
by TheBigBlackOne May 20, 2017