Joel Horwood’s hilarious play draws on that ever-amusing tendency of adolescents and parents to regard each other as alien life forms, while portraying one volatile friendship in Walberswick. A funky soundtrack, luminous stage and deadpan narration create a fun atmosphere as the characters try to locate the borderlines between being teenager and adult, adult and oldie.

Pleasance Courtyard, 556 6550, until 25 Aug, 5pm, £8.50–£9.50 (£7–£8).