be like jelly
To be or feel very unstable or weak. This phrase is often used to describe the knees or legs. My legs were like jelly when I got off that roller coaster—I had to sit down right away.
feel like jelly
To feel very unstable or weak. This phrase is often used to describe the knees or legs. My legs felt like jelly when I got off that roller coaster—I had to sit down right away.
be/feel like ˈjelly
(also turn to ˈjelly) (of legs or knees) feel weak because you are nervous or frightened.: She couldn’t move — her head was swimming, her mouth was dry and her legs felt like jelly.