In Japanese, testsuya is composed to two characters: tetsu means to go through or pierce, and ya means night, so tetsuya is to pull an all-nighter.
Have a late-night call w/Japan & Singapore, and I've spent all day identifying a bug that I thought was caused by our custom fonts, but it seems like it is in fact a bug in the pre-processor / compiler.
So I have submitted a bug report and hope the anxious kid in Finland or whomever is maintaining the bug list and code base gets it sorted quickly.
Luckily I am gorging myself on the best cookies evar and staying appropriately hydrated, so it's all good.
The startup mantra: we'll get plenty of sleep AFTER we're funded!