The act of a man twisting his penis in reverse, and inserting it into his own anus, causing the penis to resemble an ostrich burying its head into the sand.
Did you hear about Jimmy? His mom was traumatized when she walked in on him doing the ostrich!
A sexual position for those who have tried everything else. The female (or male) buries their head in the sand and sticks their nether regions as high as possible. The partner inserts appendage in appropriate orifice. The goal is for this person to finish before the other runs out of oxygen.
Anne and Bob had a close call while attempting the ostrich but Bob was able to kick it into high gear and finished as Anne was just a little blue from lack of oxygen