post #4539446 post #3953433 post #4767364 post #4682486 post #3610714

Pec Expansion describes expansion focusing on a character's pectoral muscles.

This tag is used for posts where a character's pecs are visibly shown expanding, or where they are involved in an increase in size in a short time period.

(Note also the fact that: often the expansion taking place is much faster than is physically possible)

Not to be confused with

• moob_expansion - For expansion focusing on "fat" pecs.

Related tags

• muscular
• collarbone

• Muscles
• Neck: sternocleidomastoid
• Torso: abs / back_muscles / pecs / serratus / obliques
• Arm: biceps / triceps / deltoids / forearm_muscles
• Leg: quads
• Butt: butt_muscles

• Gender specific
• muscular_ambiguous
• muscular_male
• muscular_female
• muscular_intersex
• muscular_andromorph
• muscular_gynomorph
• muscular_herm
• muscular_maleherm

See also

• breast_expansion