Waiver is apparently a defence to forfeiture. Now a man may relinquish a particular line of defence by not pleading it. If therefore the present Defendants failed to plead waiver, they will be deemed to have relinquished that defence. Quilibet potest renunciare juri pro se introducto – Anyone may, at his pleasure, renounce the benefit of a stipulation or other right introduced entirely in his own favour.
– Oputa JSC. Oniah v. Onyia (1989)