"Sadly yes, but I lived!". What spawns this question is Crash and Eddie asking if Buck died during his first meeting with Rudy. While Buck's wording naturally makes him sound crazy, it could have been a poorly worded attempt at saying: "That Buck died, but this Buck survived!"
Manny puts himself in all sorts of perilous situations in the third movie that nearly get him killed, right before his wife gives birth. So had Manny not been so lucky, Peaches would have grown up with a dead father whom she never met, and Ellie would be a widow suffering the same grief, survivor's guilt and emotional trauma that Manny has suffered. Worst case scenario, she'd probably be even more overly-protective of Peaches than Manny was in the fourth movie, possibly to the point of being a My Beloved Smother.
When Buck examines the "crime scene" he finds a stepped-on head of broccoli and is visibly disgusted in a way that's clearly a joke about broccoli being gross. However, a few moments later, he talks about how he was once legitimately in love with a pineapple and got married to it, implying that he views fruits and vegetables as people. In his eyes, the broccoli he found was probably a crushed corpse.
