Family Ties (1982)

Season 2: Episode 12

Alex is both amazed and furious when a critical admissions interview at Princeton University is shattered by his hysterical sister Mallory, who feels her anger over discovering her boyfriend kissing another girl is more important than his college education. Alex is overjoyed at going to Princeton for the interview, but not too keen about taking his sister along so she can visit her boyfriend Jeff at the university. He drops Mallory off at Jeff's and heads for his important interview, only to be humiliated when he has to leave the meeting to comfort his weepy sister.