An idea hits you. Still underneath the fat ogre humping your tits, you grin widely. You take your arm and pry it up next to your face. Then you slip a finger in the ogre's blue, squishy ass.
You take in a deep breath (rank as the air is) and utter the fireball spell with as much power as you can muster.
An explosion of bloody guts, charred bones, and smoke from where the ogre used to be leaves you and everything in 50 feet coated with gore. The ogre currently eating you out tries to open its eyes, blinking out his compatriot's blood, as you level your finger with his forehead. When the ogre opens its eyes, sputtering blood out of its mouth, he lets out a whimper but doesn't dare move an inch.