So - pre-made locks two tank-y type things jax and mundo presume one will go top, I take sivir as carry, we have a lux for mid and a fiddle jungling.
So the two premades both rush bottom, and refuse to move, leaving me solo top against a shyvana and a darius. I actually kill one of them twice playing carefully, and make one bad call that leads to darius tower diving me and I give them 1 kill.
In this 10-15 mins bottom feeds so hard it's untrue, and fiddlesticks who i presume was also their friend just camps bottom, so even though I am 2 v 1 I NEVER see him even 1 time in my lane. Eventually lux from mid comes up and we kill top lane, and me and lux from that point do carry as hard as we can but the damage is done. The other 3 just go off into their own lanes and feed randomly most of the game, only coming into team fights rarely, usually after me and lux have got them low and they can rush in and snipe a kill. Neither of the "tanks" made any effort to tank anything, standing around at the back of any fight.
Needless to say we lost, even though they were not very good. case in point - their Shyvana build 2 Guardian Angels...