What is Mathcad?
1.
The most powerful computer program in the world. Frequently used for for solving integrals, graphing solutions to diffrential equations, negotiating international trade disputes, and calculating tax returns.  See also 
I used MathCAD to solve the Ethiopia-eritrea border dispute.
2.
Math software which is morally reprehensible.
MathCAD is a dirty dog
See 
Random Words:
1. 
suggestive of an innuendo
Boy 1: Let's make up weird pickup lines
Boy 2: Okay
Boy 1: "Let me stick my pin your cushion"..