My story is somewhat related. Can't remember the year (early to mid 2000s) but we were playing OU at home and the game was not expected to be competitive. We were all having a great time tailgating so we decided to stay in the lot and *consider* going in if we were still in it at half time. To our surprise were were.
Ended up a buddy's gf (now wife) and myself were the only ones who decided to go into the game. Normally I pulled the tactic of the poster above, loading up beers in my waste, and would act like I pulled something and was hunched over. My buddy's gf was more inebriated and decided she was simply going to keep her alcohol in on off those pull string shoulder bags. I told her they would check it and it wasn't going to work.
Sometimes security got lazy when they were overwhelmed, but we were the only people entering this gate into the stadium and were outnumbered 5-2. Of course they ask to check her bag. She responds in the bitchiest of tones "Uh, you're not checking my bag". They said, "well we can't let you in without checking the bag". I tried to convince her to turn around, go back to the tailgate or at least out of site, and leave her liquor there or conceal it some other way. She then gets REALLY pissy with security, goes back and forth a few more times, then storms through the gate. I'm like 'uh....oh ****!' thinking she's going to get thrown out or arrested but security was literally too stunned to respond. Realizing this I shrug my shoulders, apologize, and follow her in. They never followed us and nothing came of it.
I still laugh thinking about it til this day.