So, I started with this (actually happened):
I (well my friend) accidentally pulled his truck and laden trailer over your yard last night.
I very sincerely apologize for this. I will gladly repair any sprinkler system damage, or other damage to the lawn.
I do not anticipate this ever happening again. Both my wife I value your friendship and your being better neighbors than I am.
Apologies. Please let me know what needs repair.
I got this back: