For me it was Pepsi Fire.

Opened a can, tried it. Decided I didn’t like it. Then, after I finished that can, I opened another, just to be sure. Yep. Definitely don’t like it. Opened another can. Ummm. Hmmm.

Went to the store to buy more. Bought cases. Kept going back to get more.

WHAT DO YOU MEAN IT WAS FOR A LIMITED TIME ONLY? I NEED MORE PEPSI FIRE!

Red Dr. Pepper was the one. THE. ONE.