Fabricate(:a, :count => 2)
...
NoMethodError: undefined method `count=' for #<Ad:0x12e4ec8c8>
This one is kind of obvious since this is usually the syntax to override specific attributes.
ree-1.8.7-2011.03 :003 > [Fabricate(:a), Fabricate(:a)]
...
This is probably the best possible solution right now.
Fabricate.times(2, :a)