I see from your status you are 17, Sports, girl and screwing around with your buds is allot funner than working, right? Any work your dad gives you gets in the way of that, right? If your like most kids.
I have a feeling what you think working your Bu77 off and what your dad knows working your bu77 off, are not the same.
Keep your mouth shut and try doing more, or better yet take the time to look at what you, do how long it takes to do it, and then subtract the time you probably goofed off doing it. Could you have done it quicker if you hit it head on and just did it? How much more work would have been done in that time? If your honest with yourself, you probably wont like your own answer. Now if you do work your bu77 off and you know it you need to feel good about yourself and figure your dad is just trying to get you ready for the real world.
When I was 12 and my brother was 11 we had what they called year round school, go to school for 9 weeks off for 3 for 4 quarters. When we were off we had a list of things to do each day. It took us all day to get them done, so we did not get to do much else. Now had we just got up in the morning hit it hard it might have taken 2 maybe 3 hours. It took us about 6 quarters to finally figure this out, but we could be goofing off by 10 in the morning if we really got to it.
Now As I got older my dad got tougher and the work got harder but it still only took me 2 to3 hours if I just did it. My dad climbed my bu77, but most the time he did, I could see where I may have pushed his buttons a bit.