No set time frame or situation, just a bit of silliness.
Megaphonetical
Daniel raised his fist and knocked three times on Jack's door. He waited in anticipation of an answer for a second or two. When it seemed none were forthcoming, he tried again.
"Jack?" he called. Perhaps his friend couldn't hear him. But he seriously doubted this. It had seemed evident to him that Jack had no intention of talking to him. But that wouldn't stop Daniel Jackson, no way. He knocked again, this time as hard as he possibly could without fear of the door falling in. But, again, there was still no answer.
"Jack, are you here?" He tried the door handle. It was unlocked. Daniel poked the door until it opened fully and, being careful not to actually go inside, stuck his head just inside the hallway. "Hello?"
"I'm not here, Daniel," announced a voice from somewhere within. It was dripping in sarcasm - unmistakably Jack.
"Can I come in?"
"No." Jack's disembodied voice came from the vicinity of the kitchen. No footsteps followed: the colonel had no intention of showing Daniel into his house.
"Can I talk to you, then?"
"No."
The archaeologist sighed deeply, made a face and then nodded. He had expected such a reaction, and had prepared himself accordingly. He cleared his throat, tested the apparatus he was going to be using with a couple of twitches of the finger and then proceeded to fulfill the purpose for his visit.
"Fine," he announced into the megaphone - his apparatus of choice. The sound resounded in a magnificently epic manner around Jack's neighbourhood; several neighbours poked their heads out their windows to see what all the fuss was about. "I'll speak to you from out here."
Daniel's unscrupulous tactic worked like a charm, just like he knew they would. Jack darted to the front door and, ignoring the gleeful smirk his friend wore with pride, heaved him inside.
