Be/feel like jelly Definition 1 of 2Pro Tip 1/3Emotional State Use when describing a physical reaction to strong emotions like fear or anxiety. Before giving my speech, I felt like jelly. Pro Tip 2/3After Exercise Commonly used after intense physical activity to describe feelings of exhaustion. After my first yoga class, my arms felt like jelly. Pro Tip 3/3Not Literal It's a metaphorical expression, not describing actual jelly, but a state of weakness. My whole body felt like jelly after the scare.