Who can tell me what this joke really means? . .

Learn Mendel's genetic law: Come on, bang, bang.

Plane geometry is different from solid geometry: watching movies is different from actual combat.

I'm inclined to Italy: I only look at infantry.

Why didn't Napoleon use the air force? Why don't you masturbate?

Lexington: Sex is better.

"Are you familiar with Ampere's Law?"

Ampere's rule, also known as the right-hand spiral rule, is a vivid extubation action in which the four fingers of the right hand clench their fists and extend their thumbs. Sister means, do you only care?

"When ethanol is used to make ethylene, the thermometer should not be placed carelessly."

When building the reaction device, the thermometer should be inserted into the bottom liquid of the round bottom flask. It means I know what to do, and I will stick to it. I am an old driver.

"The southeast wind has been going on for three months."

Affected by the southeast trade winds, the local climate forms a tropical monsoon climate and a tropical rain forest climate, characterized by strong and lasting winds and abundant precipitation. How is your endurance? Can I "precipitate rich"? Another meaning is "don't mess with the baby."

"I know how to put out the alcohol lamp correctly."

Come on, I'll wear a condom.

By the way, besides self-sufficient consumption, there is also commodity consumption.

Commodity consumption is the symmetry of self-sufficient consumption.

The consumption of money to buy goods and services in the market. For a society, consumption can be divided into two categories: self-sufficient consumption and commodity exchange consumption. In a market economy, most consumption is achieved through commodity consumption.

So, the meaning here may be, "Besides taking care of yourself, have you ever gone whoring?"