Men and Power Tools

Equal one happy mother and wife (Dave was to the left in each of the photos)...

Which can, in turn, equate to one happy son and husband :)
It is an algebraic phenomenon...

So ladies - don't knock men and their power tools. 

The pluses outweigh the minuses ;)

Why Does It Always Have to End This Way

If you know the answer, please let me know.

I don't want to hear, "They're boys!"

Got it :)