'Glee' body swap: Tina, Puck, Finn transform in new video - watch
The clip is the first footage from this week's instalment 'Props', in which all the main cast members will switch roles.
In the video, Tina (Jenna Ushkowitz) falls into a mall fountain while moaning about Rachel (Lea Michele) and hits her head.
Blaine (Darren Criss) and Kurt (Chris Colfer) rush to help her, but when she is pulled above the surface Puck (Mark Salling) and Finn (Cory Monteith) are wearing their clothes and calling her Rachel.
Teaser images and a behind the scenes trailer of the episode have previously been revealed.
'Props' will air alongside the penultimate episode of Glee's third season next Thursday (May 15) at 8/7c on Fox. The series continues in the UK Thursdays at 9pm on Sky1.