Cause and affect would be to do something and have something effect of of it example 1: 'I tripped over a rock' is the cause. 'I dropped my ice cream' is the effect. I wasnt watching where i was goin, so i tripped and dropped my ice cream. example 2: 'I laid outside in the sun' is the cause. 'I got sunburned' is the effect. I got sunburned cause I was out in the sun.
An implicit message is something that is hinted at but not directly stated by the speaker. In this case the phrase "I don't expect you to know what cool people wear" implies that the person being spoken to is not cool.
