Been there and done that.
Saw a rider in the distance and eventually caught him but did not realise how much effort I had been putting. Overtook him instead of resting a while behind and as I passed him realised how Kna*kered I was and that there was a headwind. Couldn't lose face though so had to try to distance him for a good few miles till he turned off.
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How long was I in the army? Five foot seven.
Spike Milligan