nairdziest hairsbreadth
a gap so narrow it’s like your ex’s forgiveness after you ate their pizza.
The gap between my coffee and my first sip was a hairsbreadth. I spilled it on my shirt.
The gap between my paycheck and my shopping spree was a hairsbreadth. Now I’m broke.
The gap between my dog’s obedience and his actual behavior was a hairsbreadth. He ran away with my sock.