you have to buy empty lube bottles from the Naughty Nook website. You can access the web browser from the laptop in your cubicle. After you purchase the empty bottle, make sure to equip it by visiting the Liquid Corp. website. Scroll down to the bottom of the page to view your inventory. Once you noclip, equip the empty bottle with your mouse wheel or by pressing 1. Fill the empty bottle at the dispenser, then bring the full bottle to the merchant. Click on the green bottle to place the full lube bottle on the stand. (the green bottle will have a white outline when you are properly looking at it to activate it) If you wait to see the merchant pop out of her hole, spray her with the horny spray for a surprise!