A hazardous result of exposure. Might be derived from: https://www.youtube.com/watch?v=_n85uq3vb8w
A hack saw.
Hot glue or other thick, obnoxious, glues or end-of-production PCB coatings; “They just hot-snotted that board in there. [Non-AvE word.]
Hot Pink Hockey Tape. Reference to High-Pressure/High-Temperature.
1. Chainsaw (US). Oxy-Fuel cutting torch (UK).