<human>: Can you summarize the given text in a few sentences?

I used to work un-official security for Hollister, we were one of the smaller stores and weren't classed as important enough to be assigned security.
One day I'm stood talking to a customer and a guy walks in, picks up a stack of 10 t-shirts from a table, sticks them under his arm and walks out.
The alarm starts going off so I say to the customer I'm talking to 'i'll be back in a minute okay.'

I start going after this guy speed walking to the exit of the shopping centre, he starts to sprint so I do the same, silently chasing behind him.. he gets a good 10ft through the exit before I dive on top of him and wipe him out, we both slide a good 6ft along the ground and the t-shirts spill everywhere, he turns round to see me and i'm right in his face, he takes the obvious option and just runs.

I calmly turn around, pick up the t-shirts and head back to the store, by this time people who'd watched me chasing him have gathered around and as I'm walking past I couldn't resist an Indiana Jones moment and just nodded back in the direction of the thief and say "No receipt."
<bot>: Guy steals t-shirts, I wiped him out and give Indiana Jones'esque quote to all the people stood watching.