with sony Vegas?

Like you know how someone does an action perhaps say " I hate you ". How do you make it so that clip repeats it self like 3-4 times lets say in a row.

I can add a remix sound effect to the movie but how do you ACTUALLY MAKE THE CLIP REPEAT IT sELF AS A PART OF THE MOVE?

Thanks

This is using ONLY vegas (any version i have pro 8 )