Just my $0.02...
To do list:
Prior to neutering= pee on every tree, bush, chair, corner, trash can, post, and possibly any other dog that gets in the way. Ignore all calls from mom to come. Drink water and repeat process.
After neutering= fetch, frisbee, really gotta pee but I'll hold it because she is gonna throw the frisbee again, catch the frisbee and find the closest tree to empty bladder while holding the frisbee, bring back the frisbee so mom can throw it again.
Oh, and I don't have to beg him to eat anymore...
Those are the only side effects I have experienced.