Have mercy!

With a mullet wig intact and a great sense of humor, Johm Stamos dug Uncle Jesse out of mothballs on Jimmy Fallon last night.

Look for Lori Laughlin at the end planting a big one on Uncle Jesse's lips and spot Danny tanner himself, Bob Saget in the crowd cheering him on.

Maybe David Silver & The Commotions will be next...let's hope not.