I was in a car accident last night . I'm fine , the other driver is fine , and the damage was minor . But , it has served to increased my frustration level , which has been building all week . I feel like I will be drinking this weekend . So , I am in my car , Belisarius , heading out of work . 
Question: Why does the writer feel like they will be drinking this weekend ?
Because they need to relieve some stress .