When your girl teabags your ballsack and pushes your nuts into her cheeks, looking like a stuffed chipmunk, then proceeds to nibble on your sack with her rodent-like buckteeth.
Damn that girl left a scar when she angry chipmunked me last night.
A sexual act whereby two gentleman ejaculate into a woman's mouth, one in each cheek. As the recipient of the dual ejaculants attempts to spit out the loads from her cheeks, the mouth is held shut, thus resembling an angry chipmunk.
Roberto and I gave Belinda the old "angry chipmunk" after the Star Trek Convention.