Urban Dictionary: permissive sign

1.	scamdoo
	describes the "circle with a line through it" which is generally understood to prohibit a certain activity. in an area where smoking is prohibited, there will generally be a non-smoking sign displaying a cigarette within a scamdoo. buy scamdoo mugs & shirts prohibitive sign prohibitory sign proscriptive sign proscriptive symbol permissive sign symbol by Fernand Schmoe Feb 14, 2006 add a video

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