Tell me about an ambush? Tell me about an ambush? I ambushed you with a cup of coffee!

Spence:

[drawing a diagram on the white board - two circles with arrows pointing at each other]
We got shooters here... shooters here. I'll tell you an old trick... Sam:
Hey. [Sam puts his cup of coffee down on a table, walks over to the white board and rubs out Spence's diagram] Spence:
What's your problem? Sam:
Draw it again. Draw it again. You're the ace field man, Draw it again. It's a simple diagram, just Draw it again, draw what you saw. [Spence just stands there] Sam:
Draw it again! Draw it again. [Spence still does nothing so Sam takes the marker pen off him and redraws his diagram] Sam:
Two shooters, car comes through here, shooters across from each other, kill each other dead. Oh my, where'd you learn that? Huh? Spence:
In the regiment. Sam:
What regiment was that? Spence:
The 22nd Special Air Service. Sam:
What's the color of the boathouse at Hereford? What's the color of the boathouse at Hereford? Spence:
I don't like your attitude. Sam:
What's the color of the boathouse? Spence:
Oh, fuck off! Sam:
[moves closer to Spence, who backs away]
You got the gun, I'm unarmed. Do something. Go ahead, Do something. Do something. Do something. [as he backs away, Spence bumps into the table with Sam's coffee cup on it, spilling hot coffee onto his leg. Sam grabs his neck and face and bends him backwards over a railing, completely overpowering him. He takes Spence's gun off of him, then releases him] Sam:
Tell me about an ambush? Tell me about an ambush? I ambushed you with a cup of coffee!