Farnsworth is already officially retired and by amazon price already seems to be profitable flipping immediately. Shocked you leave any behind.
If your store refuses the coupon, don't bother arguing. Just buy the cheapest thing you can find along with the falling water, say a pack of gum, or a book mark.
Hand them the coupon, if they say it doesn't work on lego, say fine its for the gum.
They scan it, the system WILL allow it for the highest price item in your transaction because the coupon does work for lego OTHER THAN LEGO IN THE TOYS & GAMES dept. IE: architecture (other than studio, mindstorms, DS, R2-D2).
The cashier will make a funny face IF they notice, and you walk out with your item.
Return or enjoy the gum as befits your gum preferences.
When you speak of me,,,,,speak kindly.
****also note, this is not a hack, this is not cheating, this is how to get around a B&****** employee, whose misunderstanding of corp policy prevents you from using the coupon the way its intended to work. In their defense, their boss probably said, hey no coupons on lego anymore. They didnt read/understand their own fine print.