You have a poem about winter that you say to warn people against going outside. It's cold and dangerous in winter! You admonish anyone and everyone you see going out there with your scary winter poem.
To make sure people listen to your warning, you threaten to take away their cake (けい). People will do anything for cake, so when you bring it up, they actually take your attempts to warn them about winter seriously.
Currently there are no similar looking kanji which exist in the WaniKani learning system