I just asked Dan this question and he said he gets them under his chin after yawning... But they must not be too bad because he's not mentioned them before.

Michelle, CG to husband (45), DX 2/08 Stage IVa Adenocarcinoma Salivary Gland (T2N2bMO)
Parotidectomy & ND 2/08, Tumor margins not clear, 4 of 30 nodes positve for cancer,
TX IMRT 39x, cisplatin 7x (completed 5/1/08),
PEG (4/22 - 7/9), No port. Currently in remission!