Tea.

There's nothing to like about tea.  Whether iced, hot, bottled, or bagged, tea is gross.  To me, tea tastes like watered down Gatorade.  I also don't believe in the rejuvenating powers of tea.  I will admit that I haven't tried every different flavor/style/plant of tea, but none of them sound appealing.  Literally, if someone handed by a cup of tea and a slice of lemon, I would eat the lemon first.  The aroma of tea also disgusts me.  It has a sweet smell, but it lingers and gets stale.  Also, the people who name teas did a pretty bad job.  Does anyone really want to drink something called Earl Grey?

Airline drink cups.

Nowadays, whenever you take any flight, as long as it's over 50 miles, most airlines will give you a soft beverage for free.  Not meaning to look the gift-horse in the mouth, they are pretty stupid.  The drinks themselves are fine, but mainly the way they serve them annoys me.  Why must they be in plastic cups?  If they know airplanes encounter turbulence, why would they use cups with such a wide mouth?  Instead, I think they should just give us the mini cans of soda/juice, or use these: 

'Shopped it myself.

Or you know the easiest solution?  Give us lids and straws.