Today I did a phone interview with a job applicant who spent a good part of the interview telling me why his close friend, who is also applying for a job with us, shouldn't get it and he should.
The friend, by the way, referred him to the job opening. He repaid him for the favor with statements like this one: "He didn't do anything last summer except go to Burning Man."
(Yes, these are recent grads.)
This is not a good strategy.