WATCH: Alison Sweeney Has 30 Seconds To Remember 21 Years of ‘DAYS” Sami on ‘Ellen’

After 21 years portraying Sami Brady on NBC's "Days of our Lives," you'd think Alison Sweeney would have forgotten some of her characters' storyline plot points, but you'd be wrong. Appearing on the Wednesday, October 1 episode of "The Ellen DeGeneres Show," as part of its Breast Cancer Awareness Month day one episode, Sweeney took part in the segment "30 Seconds or Else," only she didn't exactly know what the "else" was (presumably water).