while a girl is laying on her belly... you stick "one thumb down" her ass hole and "one thumb up" her pussy.
i was with sally last night.. i gave her the 'ol siskel and ebert!
av flesh colored radio 3. juni 2007
1 more definition
Sexual expression involving the enterance of two thumbs from two individuals entering the rectal area of another individual in seqence.
Upon leaving the theatre Dan screamed aloud as Ryan and I gave him a two thumbs up, Siskel and Ebert salute. The movie sucked but Dan got a great review
av dave O 12. mars 2004