silly me

Interjection

 * 1)  An expression used to convey mild self-deprecation or to acknowledge a mistake or oversight.
 * ''Oh, silly me! I forgot to buy the apples!
 * Silly me, I thought it was Saturday today!

Usage notes

 * "Silly me" is typically followed by a statement indicating the mistake or oversight being acknowledged.

Synonyms

 * d'oh
 * oops
 * my bad