look up any word, like yeet:
 
1.
The headache you get from the holidays and holiday shopping.
Ugh, trying to figure out what to get Dad is giving me such a holidache.
by GustinGrope November 29, 2010
 
2.
a headache one experiences while on holiday.
Since you are suffering from a holidache, you had better go back to the desk, I suppose.
by uttam maharjan November 29, 2010