I've been in your shoes many a time.  I usually do a preemptive strike with some flowers.  My last mishap with paint cost me an iPad mini...softened the blow quite nicely.
In all seriousness, if it's kilz2, try putting a damp cloth on it for about 5 minutes. Then GENTLY scrape it off with a 1 1/2 or 2 inch paint scraper.
				
			In all seriousness, if it's kilz2, try putting a damp cloth on it for about 5 minutes. Then GENTLY scrape it off with a 1 1/2 or 2 inch paint scraper.
 
	 
 
		 
 
		 
 
		 
 
		