Here are some possibilities based on what it might be trying to convey:
* Hobnob: This is a common word meaning to socialize or spend time in a friendly way with someone, especially someone of a higher social status.
* Hobnocker: This might be a regional dialect word, possibly meaning someone who socializes a lot, or someone who is boisterous or loud.
* Hobnobbing: This is the act of socializing with someone, typically someone of a higher social status.
Without more context, it's impossible to say for sure what "hobnoker" means. If you can provide more information about where you encountered this word, it might be easier to determine its meaning.