This takes place in the secret underground base the Thunderbolts currently have. Let's go with a fixed angle for the panels.
1 - The main planning area of the Thunderbolts HQ - the one with the big table. Deadpool sits alone, a picnic basket in front of him on the table. He's placed a stereotypical red checkered table cloth on the table and has a loud napkin wrapped around his neck as a bib. General Ross walks by, visible through a doorway in the background, confused by what he sees going on in the room.
2 - General Ross is entering the room. He's still confused, but he looks more annoyed than anything. Deadpool is taking some plates and food out of the picnic basket.
ROSS: What are you doing?
3 - Deadpool has a big sandwich in his hand and holds it as if ready to take a bit bite out of it. Genreal Ross now stands before him next to the table, a slight frown on his face.
DEADPOOL: What does it look like? I'm enjoying a loverly pic-a-nic basket.
4 - Deadpool has taken a bit out of the sandwich and is visibly chewing on it - for a little visual gag, Deadpool's mask should remain on in every panel. General Ross continues to interrogate the strange mecercenary, showing his displeasure with his face and body language.
ROSS (1): I can see that. Why are you doing that?
ROSS (2): Particularly considering everyone should be prepping for the upcoming mission.
5 - Deadpool has nearly finished the sandwich and is now holding a beer that he is about to take a swig from. General Ross stands at attention, listening to Deadpool's answer.
DEADPOOL: You said to pack light.
6 - Deadpool chugs down the beer, the sandwich finished. General Ross' position has not changed.
DEADPOOL: And only to bring the bear necessities.
7 - Deadpool looks towards General Ross, happy anticipation evident on his face, despite the mask - he's pretty proud of himself. He might even have his arms out in a body-wide jazz hands pose. General Ross is nearly unmoving, perhaps a slight furrowed brow of annoyance.
8 - Deadpool holds the same position. General Ross has given up on the conversation and has turned around to march out of the room.
ROSS: Just get your things ready. We dust off in five.
9 - General Ross is mostly out of the room - perhaps part of his back a leg are visibly through the door he exists from. Deadpool stands up indignantly, perhaps knocking over his chair or some of the picnic.
DEADPOOL: Oh, come on! Both of those references are nearly old enough for someone your age to be able to catch!