I, Time Traveler

The path down to the beach was uneven and steep. I took one step when I heard someone behind me.

"That's a bad idea."

I turned around, and saw me. Me, in crutches and a cast, with a time machine helmet.

"Let me guess," one of us asked, "If I go down the cliff, I'll slip and fall and end up in crutches."

I nodded in response.

"So, you're here to warn me? But, won't that cause a time loop paradox whatever?"

"No, go ahead down. I'm just here to gloat about it."

Jerk.