The sound produced by a can of beer (or soft drink) when opened. In a metaphorical sense, a triska means a treat, a delightful little plunder that opens up the night with a sense of excitement and anticipation. It is the upmost compliment to an act of skill or pleasure. The smaller the triska is, the greater the delight is. E.g. That goal kick was a little triska!

An embarrassed smile.