Oil in the water

[Wilbur]

I went to check my oil today and noticed that a brown oily/ water mess has come out of the radiator overflow tube and is laying around the front motor mount. Upon looking into the radiator, l see that it's chock full of this oily sludge. What's the popular opinion as to what the issue is? I drained the oil out of the crankcase, and it looked fine, showing no water in the base. Does a blown head gasket give this result? She ran a little crappy coming home from a party last weekend and that was the last time l ran it.