The word "dunk" refers to the action of forcefully putting something or someone into a liquid or substance, often for a short period of time. Full definition
I think Blizzard has come back with a big slam dunk in their return to the console video game market with Diablo III. (gamerchatter.com)
Had he picked Linda Darling Hammond as his Ed Secretary, the story might have been different, but I think Arnie was a slam dunk in part because they shoot hoops.Considering Obma's lack of administrative experience when he assumed office, I think he's done well, but the number of decisions facing him from the past administration was enormous, and I think education got short shrift. (educationopportunitynetwork.org)
Crawford, the No. 27 pick in the 2010 draft, is most famous for dunking on LeBron James while still in college (Xavier). (diehardsport.com)