|Ice to see you.|
Step 1: Steal tattoo guy's phone. It should have a video game on it that you can use to hack into the security system of the vault. (Oh, there's the Brave Sound.)
Step 2: Sneak into the security control room and start pressing buttons/turning knobs until the screens show thick lines.
Step 3: Sneak into tattoo guy's house by climbing up the wall. This is important: Make sure you wear your anti-gravity hairspray. One inside sexually look everywhere for something, taking care to bend over as much as possible. If he wakes up he'll just think it was a sexy dream, LOL!
Step 4: You should still have that phone from earlier. Go ahead and play some video games on it while you're in an air duct.
Step 5: Sexually make your way through security lasers to the vault door, again making sure to bend over as much as possible. You know you're doing it right if Choa is getting turned on by it.
Step 6: When the guards finally catch on to your masterpiece of a heist simply take them out. They'll be kind enough to wait patiently for their turn, one by one.
Step 7: Profit!