suck air
To audibly inhale air between clenched teeth or pursed lips as a reaction to something uncomfortable. Expresses angst.
To suck air connotes a feeling of dread. Clark Griswold sucked air before saying, "REAL tomato ketchup, Eddie?"
suck air
To be a waste of space or doing something useless
Can you come and help us. Don’t jus suck air, you twat.
Suck air
To stand around and do nothing
Can you come help us. Don’t just suck air, you twat