Related Clues:

• Form check box
• Macho fellow
• Like a plug, but not a socket
• Staminate
• Macho one
• One with big biceps
• Stag party attender
• Defender of Castle Greyskull
• With XY chromosomes
• Like bucks
• Castle Grayskull hero
• With a Y chromosome
• ___ bonding
• One who can't bear his family?
• Charles Atlas, e.g.