I'll be there in a dime - A lie you tell to make yourself feel better, even though you

A lie you tell to make yourself feel better, even though you're probably going to be late.

'I'll be there in a dime.', said by someone who just got lost.

'I'll be there in a dime.', said by someone who forgot their keys.

'I'll be there in a dime.', said by someone who was already 15 minutes late.