i·ro·ny (r-n, r-) Pronunciation Key n. pl. i·ro·nies
1. The use of words to express something different from and often opposite to their literal meaning.
2. Incongruity between what might be expected and what actually occurs:
An occurrence, result, or circumstance notable for such incongruity.

For confidentiality I will refer to the person I am speaking of as Phyllis. Phyllis was really tired and didn't want to go into work tonight. She also has a doctors appointment in the morning and will be watching a taping of Dancing with the Stars. She mulled over in her head ways to call in sick. She picked one and went with it. The following is the conversation. Marsha in the conversation is the staffing person on the phone.

Marsha: Hello?
Phyllis: Hi, you know what I can't go into work today. I'm not feeling well.
Marsha: But....Phyllis....you're not scheduled to work today.
Phyllis: I'm not? Why not? *puzzled look*
Marsha: You're not scheduled to come in until Sunday.
Phyllis: Really?
Marsha: Yes.
Phyllis: Oh...ok. Thanks.

Irony.