Related Clues:

• Sis' sib, possibly
• Hedonistic young male, slangily
• Alphabetically first sib
• 'Dude'
• Guy to say ''Sup?' to
• Sis may have one
• Sis’s sibling
• "Cool story, ___"
• Counterpart of sis
• “My man!”
• ''Yo, dude!''
• Guy in a frat
• Possible sib for a sis
• Modern lead-in to -grammer
• Sis's sib, perhaps