Pick a lane, any lane....
Coming up Lothian Road, lights green for the right turn into West Tollcross, car at the head of the queue indicating right and waiting for opposing traffic to clear, twonk on a minimal red singlespeed behind. Suddenly decides that where he actually needs to be is on the right hand side of the right indicating car, not filtering, just positioning himself exactly where the car would be turning.
Driver is good, gives him time to turn as the traffic clears. Cyclist is in the middle lane, which is the left side lane to turn right into Semple Street, car behind, me behind the car. Lights turn green as we roll towards them, twonk takes the turn by moving fully over into the right hand lane. Then straight after the turn drifts back into the left. The thing is, if it had been a quick shift about then fine, but he was plodding along, did no shoulder check to drift into the right lane, then no shoulder check to drift back into the left.
Fortunately driver still paying attention and hlding back. Not over yet. Cyclist indicates to turn left into the underground car park, makes the turn in the right hand lane down the ramp, so as if he's going to Scottish Widows, before then drifting once again left without looking to turn into the car park on the left (so not even straight on into the NCP).
Totally oblivious riding. Fortunately a good and patient driver behind at all times.