Rebel Cream for Caking 9 April 2008, Talavera de la Reina Ø 5.5 x 21.5 cm Whipped cream in a pressurized metal and plastic container i Rebel is a Belgian ready-to-use whipped cream in a pressurized container sold in Spain. Caking is the act of throwing a cream cake at someone. Originally a staple of slapstick comedy, caking has also come to be used for political purposes, in which throwing a pie at an authority figure, politician, or celebrity is a means of protesting against the target's political beliefs.