When you misplace something and someone says to you 'Where was the last place you had it?' - well if I knew that then I wouldn't have a problem!
'It looks like rain' - no it doesn't, it looks like sky. Rain is wet.
'It's a cold one today, isn't it?' - when you're stood at the bus stop dressed in a huge winter coat, gloves and scarf, stamping your feet to keep the circulation going. FFS!