Please no. Out of all stupid ideas possible for Poland this is second dumbest (after attacking Russia). Imagine willingly conquering region full of militant armed nazis who hate your ethnicity with a passion.
Send them all to the camps and make the one and only criteria to achieve freedom to be a written and signed admission that pierogis are, wholly and exclusively, Polish cuisine.
Idk, would it? It would place a NATO member military within direct engagement proximity of Russia. A member that is arguably more rabidly russophobic than their masters, with imperial ambitions of its own.
Funny maybe. Like getting hanged a second time after the rope broke
It'd be "pretty funny" because of how much of an unrealistic scenario it is. Ukraine already launched a missile into Poland killing one Polish national and Poland replied by calling it "just an accident". There is no way Poland ever attacks Ukraine, much less to retake Lviv. That would be some Paradox Games-tier of fantasy politics.