Nelly reacted pretty swiftly after being pelted in the head with an object while he was at club E11EVEN in Miami.

It happened on Friday, April 8 and he was standing around when the object came raining down. 

Nelly seemed confused at first. He then grabbed the back of his head and rushed toward the balcony where the guilty party was located.

But the Missouri rhymer wasn't able to get to the culprit because he was stopped by security. 

As of now, there's no word on whether the guy or girl who threw the object was identified or what happened afterward.

You can check it all out above.