A person who is annoyingly enthusiastic asking far too many questions and demanding answers!
Person who sits on forums asking loads of questions about stuff while thinking they know what they are actually talking about, what a gezer!
someone who thirsts for knowledge, or an act of pursuing wisdom. Similar to a gannit, but instead of food, knowledge.
That guy is a bit of a gezer asking all those questions.
I need to gezer before I can answer that question.