trappline

An extra phone, disposable by nature, used for either sex industry professionals--number to be given out by pimps and pros to those who need a number to call when they need a hott 'date'!
-Or-
A hidden, or unknown to wife, S.O., girlfriend, boyfriend, etc., phone, (usually poorly hidden and often found) phone, whose # is to be given out to potential sidechicks, toot-n-boots, or the regular professional or massuese for routine 'dates'...