Whatever the reason is, it’s dangerous. The object itself can cause injuries, such as perforation or bleeding, especially if is large or has sharp edges. Glasses and bottles may break, increasing the damage. And attempts to remove the item oneself can make things much worse. This can lead to haemorrhage, peritonitis, sepsis, or even death. So, guys don't try this at home. Only use safe sex toys in the anal. Otherwise, you may find yourself in dangerous and embarrassing situations and end up in the ER.