A bulge far larger than average, or realistically possible. Hyper bulges tend to fall in the "bigger than a fist and bigger than a head" range; they're impossibly huge, and often enough to make walking difficult (if not nigh impossible). Wearing bottomwear... Seems quite unfeasible...
This is the final level after Big Bulge and Huge Bulge.

Images or animations featuring this tag are always tagged as Explicit and rarely Questionable, in any case: it should never be considered Safe.

Bulge Size

• small_bulge
• bulge ("average" size)
• big_bulge
• huge_bulge
• hyper_bulge

Related tags:

• penis_outline

See also:

• erection_under_clothes
• penis_base
• tenting

Not to be confused with:

• abdominal_bulge / penis_shaped_bulge, which are for penetrations
• hyper_penis / hyper_balls unless they are directly visible, in which case poking_out should be used and hyper_bulge may not apply
• inflation, which doesn't get any *_bulge tag
• macro_bulge, which has been aliased to bulge