Let him cover up and ask for their names.

You allow the goblin to get out of you lap, and there after get on his two feet. Standing up on your own, you, as casually as you can, ask for the two goblins names. Hopefully at this point, you have gotten enough goblin DNA in your system to activate your "skill".

"So, may I ask you two your names?" You say smoothly, while rubbing off the remaining saliva from your lips with your hand.

The goblins balk a little when you say this, looking at each other in surprise. "Human.. you are able to speak goblin tongue? You are surprising." the shorter goblin vocalizes. The taller goblin also expresses his awe at your ability to communicate with him. "Human speaking goblin tongue rare. Why not tell us before, human? And.. why kiss?" He blushes while he says this, turning a slightly darker green color. He must be a little embarrassed knowing you can understand him now. The shorter one pipes up, answering your previous question. "Our name Golbin and Goldo, they strong warrior names." You veer your eyes away from them, somewhat tickled by the names they gave you.

Still a little out of breath, you clarify your reason for kissing them. "I'll keep it short, but I'm able to learn a language by ingesting the DNA of the person who knows the language. I hope the clears it up, I would apologize but you both seemed to enjoy it thoroughly."

The duo looks a little dejected to learn your kissing had an anterior motive, but cheers up a little when they see the tent in your pants. "We must leave, getting dark. Human come visit, we live deeper into cave, tunnel with plank." The shorter goblin grabs the taller one's arm whilst giggling to himself, and guides him deeper into the cave, talking in low whispers about "The handsome human".

"Well", you think, "That certainly was interesting." You are still aroused, but that can wait for later. Or, alternatively, you could go visit the goblin duo.