Ironical is a real word! Didn't know that? Yeah, you aren't alone.

From Dictionary.com:

ironic

[ ahy-ron-ik ]

adjective; from 1620's

1. using words to convey a meaning that is the opposite of its literal meaning; containing or exemplifying irony
2. of, relating to, or tending to use irony or mockery; ironical
3. coincidental; unexpected

ironical

[ ahy-ron-i-kuhl ]

adjective; first recorded in 1570's

1. pertaining to, of the nature of, exhibiting, or characterized by irony or mockery
2. using or prone to irony