Intro: Expanding Foam Valentine's Day Card
My love for you, it expands to at least twice its volume...
Use expanding foam to create a unique Valentine's Day treasure for your loved one. Be sure to present it while it's still expanding for maximum impact, and make lots of jokes about how the expanding foam really is a lot like your love: sticky, bubbling, expanding, and made of nasty chemicals you really don't want on your skin. Attach the Valentines to the fridge, so everyone has to confront it sooner or later.
When pressed, insist that the Valentine was definitely not an after-thought, and that you were not just using up a can of foam, which was going to seal itself shut after you finished a real project.