MAKING A PBJ - Knife in PB or J first?

PB first but I always wipe the knife before putting on jelly. Anyways Nutella>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>jelly >:

Actually, what I do is get this nifty jelly that comes in a plastic bottle you can just squirt it out of. I can just spread the peanut butter first, then apply the jelly. No wiping required!