GAGA Steps in DOODOO; Lady Groupon FAILS to fill LA’s Staple Center Despite Ticket Giveaways,2-4-1 Specials, Shelter Visit.

>>Lady Groupon prepares for Sunday’s Staple Center concert with massive ticket giveaway. >> Urges listless fans to attend. >> Promises dreary, weary encore performance of “meat-dress”; PETA takes aim! >> Fans ask, “Is she back again?” >> Homeless grandmother taunts, “Sing OUT, Louise!” (more on page 6)