You probably already knew this, but there's an essential vitamin that promotes bone growth. It's called Vitamin D.

Up in Canada, Yukon's Health and Human Services wanted to spread this information with ads promoting the vitamin's benefits. The wording of the headlines was unfortunate, though, as lines like "How do you do the D?" and "Need a little help… with your daily D?" betray a lack of awareness about what "the D" means in slang.

Folks on Twitter found the word choice hilarious, though.

Oh, Yukon, you beautiful weirdo. "We all need the D." https://t.co/mGxQFf1IDy — Eva Holland (@evaholland) January 23, 2016

This Yukoner overdosed on "the D" in jr high. Made me a lesbian. #Yukon pic.twitter.com/tQPcAwGOjy — Jenny Hamilton (@YukonJenny) January 23, 2016

Seems they caught wind of the gaffe, and have since removed the ads from the Internet. Take a look at a few more below. Via BuzzFeed Canada.