What does the last camel in the desert mean? Is this a joke?

This joke is about; "Once upon a time, there was a man who got lost in the desert and couldn't walk out, leaving only a camel to accompany him. This man was a little horny. He wanted to take it out on this camel, but this camel always couldn't stay well and moved helplessly. Finally, the man had to give up his idea and keep walking. Suddenly, a beautiful woman appeared before him. At this time, she was dying of thirst, and the beauty begged him to say, Sir, if you can give me some water to drink, I can promise you anything ~ The man thought about it and then promised ~ When he was young, the man stripped off his clothes and said, "The beauty needs you now ~ Come and help me lead the camel ~"! This sentence should mean 2b ~