Answer:
Expression of subjective feelings
Contractions
The first-person point of view
Explanation:
Informal languages tend to be more personal than formal language by using first-person pronouns such as ‘I’ or ‘We’, is more casual and spontaneous, and may use colloquialisms, every-day vocabulary and contractions. Likewise, the words in this style tend to be short and the sentences tend to be in the active voice.
The excerpt has all these characteristics: It uses the first-person point of view (We miss you around the neighborhood), contractions (What's new?, It's been so long), colloquialisms (bro), and it expresses subjective feelings or thoughts (You should see my ridiculous helmet!) and an every-day and spontaneous vocabulary in general.
