In the top picture, Drake is rejecting “Normal Summer Camp Activities” because most summer camps have fun things like swimming, games, and crafts. In the bottom picture, Drake approves “Shovel workout program” because in Holes, the boys at Camp Green Lake don’t actually do fun camp activities they spend all day digging holes in the hot sun as punishment. The joke is that Camp Green Lake calls itself a camp, but instead of fun, it’s basically forced labor with shovels.