meaning something is extremely bad/sucky, derived from the words suck and delicious. Meaning that the unfortunate events/things are so bad that they would be delicious.
suckalicious: to catch something or someone in the act of being really intenselymediocre or boring and have to continue watching due to obligatory reasons.
that corny wedding was totally suckalicious... their vows were painfully forced... and i fucked the groom on his bachelor party.