Calvinballing

I'm a person.

enThis user is a native speaker of the English language.

es-2Este usuario puede contribuir con un nivel intermedio de español.

This user has been on Wikipedia for 18 years, 6 months and 11 days.

$e^{i\pi \ }$This user is a mathematician.

This user is proud to be a Wikipedian.

This user remembers using a rotary dial telephone.