Glee Season 1 Episode 4 : Preggers
Kurt joins the football team and admits his homosexuality to his father, Burt, who accepts him for who he is. Quinn discovers she is pregnant and tells Finn the baby is his, when in fact the father is his best friend, Puck. Finn asks Will to teach the football team to dance, hoping to improve their performance and thus his chance of receiving a football scholarship. Puck, Mike Chang, and Matt Rutherford all join the glee club after the football team's win dancing to "Single Ladies (Put a Ring on It)". This makes them a group of twelve and eligible to compete, but Sue and former glee club director Sandy Ryerson team up in an effort to bring the club down, luring away a disillusioned Rachel, who quits when Will awards a solo she wanted to Tina.