a childs toy used for amusement in an up and down motion, capable of performing tricks

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.

Abbreviation for You're On Your Own. Something you say after a stupid person says YOLO, letting them know that you have no part in what stupid thing they're about to do.

When you're trying to hold back a monster sized shit and it keeps pushing its way out; followed by you pulling it back in.

a seemingly psychotic person who expresses him/herself through insane stunts.

Medical slang, but can be used anywhere: Means: You're on your own. Used in a hospital on the day of discharge as in the phrase "OOB,OTD, YOYO" : Out of Bed, Out the Door, You're on your own. Can be used by parents of colleged aged kids, or by someone breaking up with someone else. .

interjection

1) A greeting

2) A exclamation one makes to make one’s presence know

To say it properly one must emphasize the second “yo” and slightly raise the volume with which one says it.