A shell command which prints its input wItH AlTeRnAtInG LoWeR AnD UpPeRcAsInG.

spongebob

#! /bin/sh
# A shell command which prints its input wItH AlTeRnAtInG LoWeR AnD
# UpPeRcAsInG.
#
# Example:
# $ echo "we're all trying to find who did this" | spongebob
# wE'Re aLl tRyInG To fInD WhO DiD ThIs

<&0 awk '
{
  split($0, chars, "")
  for (i=1; i <= length($0); i++) {
    printf "%s", i % 2 == 0 ? toupper(chars[i]) : tolower(chars[i])
  }
  printf "\n"
}'