Hmmmm. Well yes you can, provided you have a tolerance to both drugs, and you also lower the doses of each drug, say you have 75% of your standard clonazepam dosage along with 1 standard drink or 2 max. (again this is only safe for someone who takes benzos daily or at least very regularly and has a tolerance)
However I certainly don't recommend it, as both drugs lower inhibitions and have the potential to cause memory loss, which often results in people forgetting how much/what they took, taking more and blacking out. Honestly, I would stick to alcohol alone if I were looking for disinhibition at a party, social event etc. benzos are NOT party drugs and if you try to use them that way you will have a bad time.
So it certainly will provide the ultimate disinhibition you seek: in the form of a complete blackout and whatever havoc you wreak walking around while you are for all intents and purposes, unconscious.