“You can't show up to an interview with scuffed shoes and your shirt untucked!”

Your teenage son is going for a job interview. He tried to dress up for it, but he still doesn't look very neat. You yell at him a little bit to dress more nicely and say:

You can't show up to an interview with scuffed shoes and your shirt untucked!

show up to (an event)

"Showing up to" an interview, a meeting, or an event means attending it or arriving at it.

(something) is scuffed

"Scuffed" shoes have been rubbed by something, so part of the leather is a lighter color. This is different from being "scratched", which means that there are clear lines showing on it.

Things that can be "scuffed" include:

• leather objects
• wood floors
• the paint on a car

an untucked shirt

Shirts are usually long enough to hang below the top of your pants. When this happens, you have two choices: you can put your shirt inside of your pants, or outside. Putting it inside is called "tucking your shirt in". Putting it outside is called "leaving your shirt untucked".

If your shirt isn't completely inside of your waistline, it can be described as "untucked".