It's mean to shake your sibling until they vomit.
Bertha is baby sitting her baby sister, who has been crying for the past fifteen minutes.
Bertha wants her baby sister to stop crying.
Bertha takes her sister in her arms and speaks to her softly while rocking her.
Bertha loses her cool and shakes her sister to make her stop crying.
Bertha's sister is soothed and falls asleep in Bertha's arms.
Bertha's sister is scared and starts vomiting.