can't hold (their) drink/liquor

if someone can't hold their drink, they get drunk after drinking very little alcohol.

You can't hold your drink, that's your problem. Two beers and you're under the table.

• the corridors of power
• the cream of the crop
• the curtain comes down on
• the curtain comes down on something
• the curtain falls
• the curtain falls on
• the curtain falls on something
• the cut and thrust of
• the cut and thrust of something
• the darkest hour is just before the dawn.
• the day of reckoning
• the dead hand of
• the dead hand of something
• the death knell
• the demon drink
• the devil finds work for idle hands.
• the devil take the hindmost
• the dice are loaded against
• the dice are loaded against someone
• the die is cast
• the dog days
• the done thing
• the dreaded lurgy
• the dust settles
• the early bird catches the worm.