Conenab

In the Spectrum game "Down to Earth", the Conenabs are cute little cyclops plant things which grow in clusters, multiply like randy maths teachers and explode when they get too numerous. Quite handy because the nasty aliens you're trying to kill sometimes hit them and blow up.

Oh bloody hell, there's another alien after me and I've only got two frigging lives left, there's some conenabs over there, I'm going to head for those. Oh shit, they've blown up and killed me.