lie flat on your back and grasp one knee with interlaced fingers
1.1Electronics (of a video image) scanned in such a way that alternate lines form one sequence which is followed by the other lines in a second sequence.
interlaced displays
Definition of interlaced in US English:
interlaced
adjectiveˌɪn(t)ərˈleɪstˌin(t)ərˈlāst
1Crossed intricately together; interwoven.
lie flat on your back and grasp one knee with interlaced fingers
1.1Electronics (of a video image) scanned in such a way that alternate lines form one sequence which is followed by the other lines in a second sequence.