Need help diagnosing a problem..

It's probably on here, but I don't know how to word it. What's going on is, well... I let my girlfriend drive my car, she gave it a flat. Got that fixed. Now there's a new problem. When stopped then pressing on the accelerator it makes a weird almost stop then picks up. It's only in first gear. I don't know why it's doing it. All fluids are good. It makes like a nudging feeling. My rpm drops to about 500 while stopped and before it even switches does a weird nudge about at 1.5k.. Any thoughts? Should I be worried?

Could you film this? It sounds like it's getting flooded or something. MAF - fuel thing having odds with each other or something. Does it idle OK?

Yeah idle is fine.. It seems to only be when the car heats up.. When it is completely cold, there is no problem.

Check your intake boot for cracks. Sounds like a problem i had once before