Perhaps you meant

• peeping the act of watching someone else secretly
• voyeur being aroused by watching someone else
• penis_tip for when a penis is 'peeking' out of a sheath or genital slit
• poking_out when a penis is poking out of clothing, as opposed to a sheath or slit
• penis_through_fly when the penis is poking out of a zipper or the appropriate hole included in men's underwear
• penis_through_leghole When a penis sticks out of a leg hole, usually due to being too big for said clothing
• pussy_through_leghole when one can see a pussy poking out through a leg hole on any type of clothing
• Penis_base when the lower garment is pulled down to see the root of the penis, but not the head
• one_breast_out
• nipple_slip