When your have a perfect 5 man ult as MF..
But someone was drunk during planning.

When Jarvan ults and traps the entire enemy team...
Right before you hit them with your Sion ult...
i too turn into karthus.
When the allied Bard ults the Baron and you just flashed over the wall....
This also irritates me as someone who plays 
When I play Zac, a Bard on my teamalways cockblocks me at some point with his ult. The anti synergy!!!!!!!!!!!!!!!
When bard hits no one except your team.
TFW When:
You're playing Fizz, need to Q through a minion/wave to escape death, and a teammate AoE kills all the minions before you can get there.
You're playing Bard and you make a portal to save your entire low HP team from certain death, only to magical journey 2ft into a wall.
You accidentally eat a minion next to a low HP teammate as Tahm Kench.
Wait, wouldn't the Bard R time out before Karthus R goes off?