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The original was posted on /r/tifu by /u/StripedCat404 on 2026-07-02 11:04:11+00:00.

TIFU by not realizing the slide closure on my Yeti cup is magnetic

I received my first Yeti from my husband in April for my birthday. Well, I've had some health issues this year and needed to up my water intake. Now, I love coffee. My favorite is cocoa and coffee. So, I just switched to decaf after my first morning dose of caffeine.

I drink 16oz of decaf with a teaspoon of cocoa in my tumbler repeatedly throughout the day. The one thing that always pissed me off about my Yeti is that the cocoa would get trapped under the black slide closure on the clear lid. So, today I decided to get after it with dental floss... and the black slide popped off... because it's magnetic and not attached like I thought.

Now I feel stupid and happy in equal parts. Hopefully my fuck up helps another ignorant Yeti user.

Cheers

☕️

Update- My husband, who's watched me soak the lid in vinegar and baking soda and listened to me complain, knew. He knew it was magnetic and just 'didn't think to tell me'. So, he's an asshole and agrees he's an asshole. SMH

TL;DR The stopper slide on my Yeti is magnetic and actually comes off the lid. I didn't know for months.