저도 몰랐던 내용이라, 영영 사전 찾아봄
http://www.merriam-webster.com/dictionary/scoot
scoot intransitive verb \ˈsküt\
: to go or leave suddenly and quickly
: to move (yourself, your chair, etc.) a short distance in a particular direction
http://www.washingtonsafepatienthandling.org/images/best_practices/SPH_BPGuide_Chpt5.pdf
scoot up in bed 라는 표현이 있습니다.