Sly, Bentley and Murray all drop onto their bellies at the crest of a hill. Sly pulls out his Binocucom and scans the area below. Two walruses (guards) can be seen conversing at the bottom of the hill. They both have flashlights.
Sly (whispering): Guys! Look out!
Sly points to the guards before flattening himself down, tail included. Bentley spots the walruses before pulling down his hat. From the bottom of the hill we can still see Murray's backside clearly visible, despite his head ducking down.
Sly (whispering): Murray?!
Murray's backside flexes, protruding it even higher above the hill than before. Sly again calls out to him. The view changes to the two guards, who now are walking away from each other. One begins scanning the hill with his flashlight. We see his face, eyebrows knit with confusion.
Walrus 1: 'Ey, Seamus! Come 'ere!
The other walrus rejoins the first and looks where he is shining his light.
Walrus 1: You see that?
We now see what they are looking at. Murray's, now bare, behind.
Walrus 2: Is that wha' I think it is?
Walrus 1: Yep. A rock that looks like an arse. (both walruses snicker, punching each other in the arms) Come on, I think I know where's the groundskeeper stores the spray paint.
As the walruses leave, the viewpoint changes back to the top of the hill. We see first Sly, then Bentley, and finally Murray walking down, Murray in the process of hiking up his pants.