Washing my clothes with fabric softener... for months!
To explain. On our way to Maine, my best college bud and I bought some laundry detergent for the cottage, All Small and Mighty, Wild and Fresh (like me, heh). While at the store, I wanted to show her a lovely scent I had found, a lemon verbena one. So I pointed it out. She pointed out right back to me that the bottle was actually fabric softener. Gasp! Had I been doing my laundry with fabric softener for almost 50 washes? I laughed and laughed. "Doubt it."
Then I thought more. "Hmm. Do I smell?" "Nope." I am sure one of my friends would have told me if I smelled funky enough to warrant investigation. In fact, I had been getting compliments on my (cheap!) perfumes recently (Pink from the Gap, and Pink Grapefruit from Bath and Body Works) so I was pretty sure I wasn't offending someone's delicate nose.
I wasn't so sure about recent laundries, though. But we were on our way to vacation, and so I thought nothing of it. She found a bottle of the right stuff anyway at a local store in Maine so it wasn't at the front of my mind. "Yeah, yeah! That's the one!!!"
Two weeks later, when I needed to do laundry again, I grabbed the new bottle (since we had left at my place in our haste to get to Vacationland). And I finally checked the older, nearly empty bottle... and she had been right. I had been doing my washing with softener! Guess I bought the wrong one. No wonder my clothes felt so nice...