WATCH: ‘30 cows in a field riddle’ boggles Irish Mammy

It’s the riddle that has stumped the Internet over the last few months: “30 cows in a field, 28 chickens .. how many didn’t?”
Now, before you start thinking about it, we recommend you watch this Mammy's attempt as she shows first hand how frustrating it can get.
BEWARE: It is NSFW.
And if you’re looking for some top notch banter, we’d recommend you read the comments between her and her daughters under the video.
Eileen, you’re a legend.
Oh, and the answer’s 10.