He's saying you used to ask an expert. Now you Google until you find an answer (I say: not necessarily the same answer..) He doesn't want to say Google, so he'

He's saying you used to ask an expert. Now you Google until you find an answer (I say: not necessarily the same answer..) He doesn't want to say Google, so he's saying g-o instead. The g-o joke is an allusion to Google being similar to God in some ways (everywhere, source of infinite knowledge, etc).