The OP describes a lot of what it is like for us. We thought that ou - the host's brother was lying when he said that we weren't paying attention or were somewhere else. The host's brother does lie about some things.
When the host was 13 he was in an auto accident that jarred him out of a day dream and made him feel like he had crossed over into a parralel dimension. During the unfolding of the accident it was (for him) as though time itself had slowed down and he was assaulted by confusion and distress.
Since that day the host sometimes wonders if this is a different Earth in a different Universe from the one he was born into.
Yesterday he had a moment of extreme forgetfulness or lack of memory over a previous post even when rereading it.
He had to search his memory stores to locate the memories of having typed that post. It was kind of scary as though someone else had typed it up.
G didn't type it and neither did V or DH or PR. Nor was it MD or WR.
Who then? Strange...