The connotation is the extra feeling that a word carries. Using words with different connotations can really change the meaning of a sentence and the tone, which means the attitude of the speaker.
The implicit meaning in the line "now I'm someone who watches tractor pulls on obscure cable channels" is that, though an Indian immigrant, in some ways she feels very integrated into American society. The main contextual clue in the line is "tractor pulls" because tractor pulling is a kind of competition that one would not think is popular in India, but it is kind of motorsport competition that is popular in the United States. The fact that the speaker is watching this competitions on cable channels lets the reader know that she has adopted some american cultural customs.
uhhhhhh yeah look at he pic and copy on paper
Exclamatory because it has an exclamation point