Full House - Season 3 Episode 21 : Just Say No Way 1995

D.J. and Kimmy organize the "Spring Backwards Dance" at school. For this dance, the girls must ask the boys to the dance. D.J. is too nervous to ask Kevin, so Stephanie does it for her. At the dance, D.J. finds Kevin and two other boys, Sam and Paul, drinking beer. D.J. takes the beer away from them in an effort to stop them. Unfortunately, this is when Jesse enters the hallway and sees D.J. holding the beer can. As a result, Jesse goes crazy and wrongfully accuses D.J. of drinking, and Jesse, Danny, and Joey refuse to believe D.J. when she tells them the truth that she was not drinking and that she was trying to stop Kevin, Sam, and Paul from drinking. Later, Jesse and the guys feel like complete fools for doubting D.J. when Kevin tells Jesse and Danny the truth, exactly what D.J. told them.