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whatever you say, node.js
https://computerfairi.es/media/VbSC70gvSft2W4Gjnlg
apparently the variable _ is replaced by whatever last output was
@boots Yeah:
irb(main):001:0> _ = "hi"
=> "hi"
irb(main):002:0> _
=> "hi"
irb(main):003:0> _.class
=> String
irb(main):004:0> _.class
=> Class
irb(main):005:0> _
=> Class
@boots Yeah. I'm pretty sure Ruby's IRB would behave some kinda similar way just with different particulars. I bet you'd end up at Class or Module instead of 'string'.