- Introducing a Novel Prank: Presenting a unique tricking game. You can pre-print our mosquito seal on your hand and playfully tap the person you want to prank. When they express annoyance, reveal the mosquito on your hand and inform them that you've just assisted in eliminating a bothersome pest that was bothering them. It's bound to be an amusing experience! - Self Inking Design:  This self inking prank stamp will ensure great impression quality with preinstalled ink. You can start using it just after you got the stamp. You don't need any preparation. It is already pre-inked with black dye. - Long Lasting Use: This is a durable and long lasting self inking stamp. You can have more than 2,000 impressions of the same quality. Package Includes: Two 9/16" diameter round self-inking mosquito stamp. Black ink.