1. I can tell the time so I use bus lanes when they're not in operation.
2. I know when to use an apostrophe.
3. I re-read a text message before sending so auto-correct doesn't alter the meaning.
What makes you cleverer than me?
Prudie - Buy a watch, it's cheaper than a taxi or bike.
Stewey - I'm not that cleaver, I'll have to axe someone. Gettit?
Pixie - Perfectly good adjective (Oxford English Dictionary)