come out with a load of crap
to talk gibberish or talk about something and makes no sense which is not relevant to that conversation
There will be complete silence then someone will make a random / bizarre statement out of the blue
Rain Man: I love rain drops
Friend 2: Well at least she still will go out with him considering he's a rain-man; he has never missed an open jump-shot in a basketball game in his entire career.
13:58:51 Rain Man: 08:32 Joe Bloggs : What are you upto this weekend?