According to the
Jack Lemmon's biography "Lemmon" by Don Widener, actress
Anne Bancroft recounted this episode from the film's shooting: "[Jack was] nice to a point where he's crazy...We had a scene in 'Prisoner [of Second Avenue'] where he had to carry a shovel in - a very close two-shot favoring me. I played the scene with tears in my eyes because Jack had accidentally hit me in the shin with that shovel. The director saw something was wrong so he stopped everything. I had a big bump on my leg, but it was Friday and over the weekend I fixed it up. When we came back on Monday the first scene was a retake of the shovel thing. Well, Jack brought the shovel in and I anticipated getting hit again. He's so full of energy, you're sure he's not noticing; but he never touched me. The take was fine, but Jack limped away. To avoid hurting me, he had cut himself. He was bleeding and we had to bandage his leg; his wound was much worse than mine. He is so kind he hurt himself rather than injure someone else. That's a little crazy! It's the nicest crazy I know, and I know a lot of crazy people."
