In the world of the tone deaf, the king is blind

Walking through the local shopping center, I noticed a free-standing ad in front of the Citibank lobby.

I know what they intended to say, a word-of-mouth encouragement:

Tell someone you know about Citibank

Obviously they meant for the reader to pass along a positive and

"Tell someone you know (tell that person what?)
   Tell him or her about Citibank"

but, since recent events revealed them to be venal, avaricious beyond restraint and not even competent in their greed,  I read it as:

"Tell someone (tell someone what?): tell him or her
 (the nasty stuff) you know about Citibank."

Unintended truth.