If you have a geeky girlfriend / boyfriend, then send them this search query instead of those common e-cards:
- sqrt(cos(x))*cos(300x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01,
- sqrt(6-x^2), -sqrt(6-x^2) from -4.5 to 4.5
sqrt(cos(x))*cos(300x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01,
sqrt(6-x^2), -sqrt(6-x^2) from -4.5 to 4.5
Copy above mathematical equation and search in Google. It produces a nice little graph which looks like heart.
Give it a try.