vsFTPd Easter Egg - Amusing Server Responses

FTP to a server using vsFTPd 1.0.0 (an example is pari.math.u-bordeaux.fr). Then send commands to the server, some of which will result in amusing messages.

Here's an example:
Status: Connecting to pari.math.u-bordeaux.fr ...
Status: Connected with pari.math.u-bordeaux.fr. Waiting for welcome message...
Response: 220 ready, dude (vsFTPd 1.0.0: beat me, break me)
Command: USER anonymous
Response: 331 Please specify the password.
Command: PASS *****
Response: 230 Login successful. Have fun.
Status: Connected
Status: Retrieving directory listing...
Command: PWD
Response: 257 "/"
Command: PORT 172,139,186,238,15,10
Response: 200 PORT command successful. Consider using PASV.
Command: TYPE A
Response: 200 ASCII tastes bad, dude.
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.