Nicki Minaj, Christina Aguilera Hook Up for ‘WooHoo’

Christina Aguilera is back to her 'Dirrty' self and this time she's getting down with Young Money rapper Nicki Minaj.
On her new song 'WooHoo,' Aguilera and Minaj pay tribute to oral love, channeling Missy Elliot over the repeated 'WooHoo' vocal sample, singing "You know you really wanna taste m…