braggart; boaster; big talker; big mouth; blowhard; bullshitter
tumbler; self-righting doll
to talk through one's hat; to blow one's own horn
trapezium horse conch (Pleuroploca trapezium)
Ezo neptune (species of whelk, Neptunea polycostata)
arthritic neptune (species of whelk, Neptunea arthritica)