Yes i know, theres a difference between a smart positional lag player and a complete donk who wants to imatate lag play until they actually grow the part. See if hes "bluffing" here commits your stack and doesn't do anything for your hand except know if your beat by his smooth call/raise and fold by a worse hand. If he's bluffing let him bluff to the river and extract more chips off him instead of committing your stack against a play you have no read on.