Might do this with the secret vacation proposal. Lay on the beach. Get up, tell her hold on, look for the ring then wobble to her with a suit on and place it in front of her and have her family and friends with signs!
Article: These are a few of my favourite Logical Fallacies! Cute cartoon, "Penguins are black and white. Some old tv shows are black and white. Therefore, some penguins are old tv shows. -- Logic: another thing that penguins aren't very good at.