through a guy

A description of something so dirty or messed up it looks like it has literally been through some guy.

"Wow, check out that guy's scabby dog"
"Christ. It looks like it's been through a guy!"
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"Look at that filthy longboard. It looks like it's been through a guy!"

come through guys

A guy whose only attention is entertainment, usually in regard of sex. Lack seriousness and doesn't care about main ambition and simple focus is to 'come through' usually to the woman involve in their lives

being defined:
Lydia: Mac is such a come through guy, he text me to meet like 6 times this week!

Casey: well he does that with everybody, come through guys are just constantly in or out and don't give a shit.