to mask one's shaky live performance and/or unfamiliarity with the words of one's own songs by enlisting the crowd to sing instead, often for entire verses and choruses, in the manner perfected by Robbie Williams
Bono didn't seem himself when U2 played Glastonbury: he kept doing a Robbie and getting the crowd to help him out by singing on his behalf.
by Ingers June 29, 2011
When someone regroups after breaking up for 15 years because he's broke.
I can't believe they're reuniting the Spize Girls just cos Gerry's broke! She's totally doing a robbie.
by Minah M October 26, 2010