When stopped, the car wants to move

[whateverjames]

I was sitting at a stoplight down the street from work and it's a long stoplight so i just started revving my engine listening to the exhaust sound (don't ask, i was bored). when i revved it to about 6100, the car jumped forward several inches. i didn't have my foot on the brake, that's how i noticed it.

this can't be right. &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/crazy.gif" border="0" valign="absmiddle" alt=':crazy:'> &nbsp;what's the deal with this? anyone ever had this happen? it's like the clutch was barely engage for a split second.