Larry means loser according to my 21yr old son. The seller called me that as well when requesting a VIN #. Apparently its usage is common with the "text don't talk" generation.
Below is from Urban Dictionary
1.Larry
1. (adj.)
To make a "Larry move" is to make a stupid mistake or go through with a not well thought out plan.
2.(adj.)
anything that is small and irrelevant. something that is described as minute or minuscule. Something that is little and makes you laugh (or not, whatever).
3. (n.)
This is anyone who falls under: stupid, boneheaded, a tool, lame, geeky, empty-headed, nerdy, idiot, etc. Anyone is a Larry at one point in their life, it is just a matter of someone calling you on it. It is anyone who makes a stupid mistake or error.