For a three-pronged approach though:
1. As an euphemism for sex, the answer stands. Keep in mind that asking may or may not be met with roasting.
2. For the euphemism for the social box, be careful about assuming that dragon social boxes are at all similar to human ones. Also, asking still may or may not be met with roasting.
3. For the actual linguistic meaning, be careful about assuming that draconic languages are at all similar to human ones in terms of their features. Though if they don't, asking is *probably* unlikely to get you roasted, but may get you ridiculed if you're supposed to …