Manger Problems

The "Manger" should have written the sign as follows:

Sorry, we are having problems with the sink. Be careful while washing your hands. Thanks, Manager

Notice the it's/its error. 

My Way or the Hiway

It's HIGHWAY. 

It's "souvenirs."

No comma should be after "Not."

No comma after "that."

There should be a comma after "with children."

The phrase "now in then" should be "now and then."

There should be a comma before "too."

People who live in glass houses....

Don't Shake It

That apostrophe is unnecessary, there should be a comma after "machine," and the capitalization errors are numerous. 

Your Mean

The dependent clause ending with "back" should be followed by a comma. The writer means "...they think [you are] the mean one," so it should read "...you're the mean one."

Arcade Game

So Many Errors

At least four errors plague this sign: 1. "Costumer" should be "Customer."  2. A comma should follow "Customer."  3. Following the comma, "we" should be capitalized. 4. The word "threw" should be "through."  5. There should be no colon after "For." 

Fragment

The content is ridiculous, and "Even if they don't deserve forgiveness" is a dependent clause written alone. That means it's a fragment. 

Apostrophe

"European's" needs no apostrophe. 

Construnction

This scrolling sign spells the word construction as CONSTRUNCTION. 

Who/Whom

"Who" is functioning as the object of a preposition. "Who" is a subject pronoun. A subject pronoun should not function as an object; therefore, "whom" should be used in this sentence. 

Confusing Headlines

Both of these headlines are a bit confusing. The first one seems to say that the mother was found dead and then charged with manslaughter. The second headline seems to have the words in the correct order.