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When the chain slips as you pull away from a red light/junction, your balls will slam onto the top tube and your knee will smash on the stem. Then you go to pedal away and realise the chain has dropped off the front rings. So you move onto the pavement to put the chain back on and your hands get all oily/greasy. Repeat this 2 or 3 times.
Then you will wish you bought a new chain ring.
Bent chainring last night, managed to ease back to something like true so no issue there, however 3 teeth broken too. Just ride it or will I soon realise I need a new ring?