facetious - not meant to be taken seriously or literally: a facetious remark.
smiley - a sideways representation of a smiling face, :‑), or similar combination of symbols, as ;‑), a winking face, or :‑(, a sad face, created by keystrokes and used to communicate humor, sarcasm, sadness, etc., in an electronic message. Compare emoticon.
Proves my point doesn't it? Any more questions?