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1.
In techno-speak, a thin client is a minimal client that relies on the server to do most of its processing. Thin clients have their memory erased every night. When applied to a person, it refers to someone who seems incapable of learning anything.
I do believe Mark is a thin client. Every thing we teach that fellow, he promptly forgets the next day.
by PseudomonasAureginosa October 30, 2009
 
2.
When a guy has a really thin dick and its compared to a shitty fake computer some work places use . A small dick that doesn't work and shitty computer that doesn't work are one in the same.
Gina tried to bang him but his thin client was useless.

small dick thin
by DRoyNEC April 14, 2011
 
3.
Another name for a small weiner.
Brian pulled his thin client out of pants,
by GM-Titay April 11, 2011