Originally Posted by The Swede

WAF, lol.

Use the "48 hour" rule.

As a reward for a fellow sneaking new and inexpensive cylinders into the Crisis Center and also escaping any female wrath that might accrue from said purchase, the fellow may make up any story he wishes after 48 hours regarding the acquisition. In other words, she gets 48 hours to notice the purchase and complain. If she misses her window, you are home free.