When the penis has a bigger than usual head. It is used to refer to a glans that has a large rim or which is at least slightly larger in circumurence than the penis shaft. The tag is generally used with a humanoid penis.

Note: Big penis ≠ Big glans. The tag refers to its proportion to the rest of the cock, tagging it to big_penis just because the whole penis is big makes the tag redundant.

See also:

• big_penis
• huge_penis
• hyper_penis

Related tags:

• humanoid_genitalia
• humanoid_penis
• glans
• small_glans