Handshake Memes

This brilliantly illustrates the fundamental difference between UDP and TCP protocols using a rather risqué analogy. On the left, UDP (Unsolicited Dick Pics) just fires off data without caring if it's received or wanted - no handshakes, no acknowledgments, just 8===D into the void. Meanwhile, TCP (Tasteful Consensual Photos) meticulously establishes a connection, gets consent, sends data, waits for acknowledgment, compliments the receiver, and properly terminates the connection with FIN packets. It's basically the networking equivalent of "shoot first, ask questions never" vs "may I please have permission to transmit, thank you very much, goodbye." The excessive politeness of TCP's 3-way handshake and termination sequence is why your HTTP requests take 69 milliseconds longer than they should.