One thought on the CCCC: "Happy follower" might be 'Jack' as in
this guy. Meaning that if we can get a phrase where the second part means 'to cross a stream', all meaning 'flip', then that's one possibility - e.g. 'JACK KNIFE' perhaps (as in, a truck), but I've never heard of 'knife' meaning that. 'Ford' being the other word to try and squeeze in as an alternative somehow...