Glomming.

Reacting to a NYT story about the problem women outnumbering men at various universities these day, Tung Yin writes:

... I went to Caltech for college in the mid- to late 1980s, where the male-female ratio was 8-1. From a social standpoint, it wasn't clear that 8-1 was better than infinity. I learned the term "glomming," which described the phenomenon of 6-8 guys standing around a single woman, usually with only one of the guys actually talking to her, and the rest just nodding their heads.

Glomming... it checks out in Urban Dictionary.

Glom is a funny word. I've always mixed it up with grok. Only grok is a Martian word.