Above yourself conceited; arrogant as easy (or simple) as abc easy

above yourself - conceited; arrogant.

as easy (or simple) as ABC - easy

within an ace of - very close to

your actual — the real, genuine

deaf as an adder: - see DEAF.

Up in the air – unresolved

all and sundry - everyone.

alive and kicking – very active

have ants in your pants – restless

cost an arm and a leg - be extremely expensive

as long as your arm - very long, informal

asleep at the wheel – inactive