Take a fork and stab your undercooked pasta with reckless abandon. The goal is to create a cratered, uneven surface that'll make your guests wonder if you're trying to be ironic or just really bad at cooking.
Next, toss it into a 0°C freezer for at least 30 minutes. This will give your undercooked pasta a texture that's 99% sure to be a conversation starter at your dinner party.
Go to Step 4: Add more mayonnaise than humanly possible for more expertly undercooked tips.