Originally , he was written as a relative stranger to both Roseanne and Jackie , although this was later retconned , and he was subsequently written as having gone to high school with them .
Arnie is the overweight , hot - tempered but jovial friend of Dan .
Originally , Dan was written as a relative stranger to both Roseanne and Jackie , although this was later retconned , and Dan was subsequently written as having gone to high school with them .
Arnie is the overweight , hot - tempered but jovial friend of Dan .