Yes he says "Get a cane!" other than that I found nothing special about his audio file except he is one of the possible taxi mission peds. There are a few peds with obvious taxi talk and others that don't have the taxi speech.
If you have GTA SA (either version 1 or 2) on the PC and want to listen to a complete ped file here is how to do it:
1. Download Alci_s_SAAT_GUI_FrontEnd_1.0.zip from here
2. Extract to any folder.
3. Run the file with the big S icon titled "SaatGuiFrontend.exe".
4. The first time you get prompted for the working folder (place where you want to save audio files).
5. Then it will ask for the GTA folder where your game is stored.
When you click the filenamed "SPC_GA" it will extract all the audio into the working directory. The process is slow and could go for a few minutes. This doesn't change anything in your game it just makes a bunch wav copies. But it doesn't show you what is inside the sound files because they are just labeled bank 001 002 etc. Go here
to see how the banks are laid out. Bank 71 on that list contains the cane ped (HMYRI) Hispanic Male Young Rich. You can ignore the number after the bank an offset used by programmers, the 3rd number is 236 his total number of phrases, and 12k is the audio quality, followed by his ID.
71 397787636 236 12k VOICE_GEN_HMYRI
You can play these files from the SAAT or you exit out and go directly to your working folder and use any media player to hear them. I used Audacity to record them to MP3 format as a single file. The 236 wav files ran a total of 7MB the one MP3 is 5MB this doesn't save much HD space it just allows you to hear them back to back.PLEASE NOTE: This software is made with the option to replace audio. Don't replace your audio unless you know exactly what you are doing. Deleting wavs in the working folder will have no effect on your game. But replacing sounds could cause your game not to sound correctly or possibly make it crash. Here is the MP3
you can hear the phrase get a cane around 26 seconds.