I used my air blow gun to blow out the sparkplug recess so there wasn't any dirt that would fall in, but I didn't think of blowing out all of the oil before the plug came out until afterwards. Whatever dripped in all came out as a huge cloud of smoke after starting the engine for the first time after I put everything back together. I guess it should be ok.
600miles on the new plugs and the truck's still running great!!
'05 F150 5.4L FX4 SCrew
'10 F350 6.4L Lariat FX4 CC SRW LWB