Flex

The speaker describes intense sexual anticipation while waiting for a woman to arrive. At first, the repeated references to waiting, sleeplessness, and impatience make the mood restless and eager. Once he imagines being with her, the lyrics become more confident and explicit, presenting sex as the expected outcome of their meeting.

Several images make the anticipation vivid. A clock “ticking on the wall” suggests that time feels slow when someone is impatient. Saying he “can’t eat nor sleep” is an exaggeration that conveys how strongly he is thinking about her. The repeated “surgery” metaphor compares sex to an operation, with the speaker casting himself as a surgeon; this playful comparison also makes the lyrics sound boastful. “Flex” here appears to mean showing or moving the body during sex.

The tone mixes desire, humor, and pressure. The speaker jokes that the woman will arrive early next time because of how satisfying the encounter will be, but this is his prediction, not proof of her feelings. The lyrics do not clearly explain her perspective or how mutual the encounter is, so the confident promises can be heard as playful boasting, while also leaving some uncertainty about the relationship between them.