Haha. The randomness in this question is just to awesome not to answer.
Okay so according to Newtons Law, the equation to gravity would look something like this:
F = Gm 1m2/r2
now to calculate ones gravitational derping force we would have something like:
GDP = 8.9743 x 10x11N-G2/kg2 x ND gbx25 6m
Now lets say the average Unicorn weighs 1000lbs. So this brings us to conclude G = 6.6726 x 1000-10N-m2/kg2/kg2 x ND gx1=2= 7
So the answer to your question is, it will take 7 derps. In the question, their was very little inconclusive evidence as to the weather the gummy bears guts were in fact beneath or behind the unicorn at the time of descending the volcano. Therefor the outcome would have dramatically change if such details where included.