Said by no one in any place other than an internet forum. It's not exactly as easy as picking up a can of pringles - even for hunting rifles, you have to wait at least an hour on average for them to run the federal background checks.
Also, the original comment was:
>"Hey hun, when you finish shopping can you catch me a new gun in the gas station/walmart/bank?" Said no one ever, living in a country with decent gun controls and laws.
To which your reply was perfectly apropriate.