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1.
The veins that attach a man's ballsack to his body.
"Whoa, that dude must have some big manstrings!"
by DictionaryMan420 March 11, 2013
3 0
 
2.
a g string made for a person of the male persuasion....
"oh my goodness!! that mans man-string is showing.... what a hoe-bag!!"
by mikhi April 11, 2005
4 9