The other, speaking with an air of authority, attributes it to the irresistible deliciousness of the McRib.
The pipe, as Richard Pryor once testified, is irresistible and powerful.
On the Straight Talk Express he was still an irresistible charmer.
1590s, from Late Latin irresistibilis, from assimilated form of in- "not, opposite of" (see in- (1)) + resistere (see resist). Related: Irresistibly; irresistibility.