Cracking Constitutional Functionality

Okay, main point yeh hai - for Administrative Law, I used 'UPA' as a mnemonic for 'Ultra Vires Action' to recall when an administrative action is unconstitutional. But, you know, yeh to aisi cheez hai ki agar UPA kaam nahi karta, toh 'P' ka place leta hoon 'P' for 'Procedure' - procedure mein koi naya concept aata hai, toh main yeh se yeh likh deta hoon - procedure mein procedural irregularity ho gayi, to yeh ultra vires action hi hai. Itne se, main UPA ka maza liya, aur yeh concept yeh clear ho gaya.

Has anyone else ka koi aasaan trick hai? Some better technique jo mera UPA se behtar ho?