How do you squeeze a lemon without a press?

I'm curious, how does one go about squeezing a lemon without the use of a traditional lemon press? It seems like a challenging task, especially when considering the amount of juice that can be extracted with the help of such a tool. Are there any alternative methods or techniques that you've found to be effective in extracting the juice from a lemon without relying on a press? I'm eager to learn more about this unconventional approach to lemon juicing.