
Just Another Genome Hacker,
Sadly, my most voted-up answer on Stackoverflow (312 votes) belonged to a question that later got deleted. The question came from a girl that asked for something cute that she could put on the icing of a birthday cake for her programmer boyfriend.
I suggested that, if her boyfriend is somewhat mathematically inclined, she write the following:
sin(t) √|cos(t)|
r = __________________ - 2 sin(t) + 2
sin(t) + 7/5
If he doesn't get it at first, she could tease him with saying that it is obvious that he should take the polar plot of it. If he still doesn't get it, she should tell him to enter it in WolframAlpha, that should yield the result:

Photography
Q&A for professional, enthusiast and amateur photographers
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Ask Different
Q&A for power users of Apple hardware and software
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
User Experience
Q&A for user experience researchers and experts
Physics
Q&A for active researchers, academics and students of physics
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Mathematics
Q&A for people studying math at any level and professionals in related fields
Server Fault
Q&A for professional system and network administrators
French Language & Usage
Q&A for students, teachers, and linguists wanting to discuss the finer points of the French language
Personal Productivity
Q&A for people wanting to improve their personal productivity
Biology
Q&A for biology researchers, academics, and students
Personal Finance & Money
Q&A for people who want to be financially literate
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs