the early hours of the morning.

I was up till the small hours of Wednesday morning finishing off that report. (often + of)

She was born in the small hours of Saturday morning.

• someone of a certain age
• someone par excellence
• someone's answer
• someone's answer someone
• someone's answer something
• someone's ass is on the line
• someone's bag of tricks
• someone's bark is worse than bite
• someone's bark is worse than their bite
• someone's beauty sleep
• someone's best bet
• someone's better half
• someone's blood boils
• someone's blood is up
• someone's blood runs cold
• someone's bottom drawer
• someone's bottom line
• someone's bread and butter
• someone's butt is on the line
• someone's claim to fame
• someone's days are numbered
• someone's ears are flapping
• someone's eyes are bigger than belly
• someone's eyes are bigger than stomach
• someone's eyes are bigger than their belly