I had this a while ago. I just pulled an all-nighter because of some servers issues so I went to a coffee shop at my usual train station on my way to my study to get an espresso. I had some difficulties with keeping my eyes open and then these teenage girls walked towards the starbucks (nope I don't do starbucks) saying something like 'Oh my god I need caffeine otherwise I won't survive today omg'.

Five minutes later they came walking out with a few huge 'coffees' with shitloads of milk and whipped cream.

I kept myself sane but I just really wanted to scream 'THAT"S NOT COFFEE/CAFFEINE, THAT"S FUCKING DESERT YOU FUCKING FUCKWITS'.
I really couldn't stand those girls at that moment nope.