The act of feeling the middle bit between the inside of the vagina and anus with thumb and forefingers – like a warm juicy sponge
did you shag her?.... "nah just did a bit of spongebobbing"
To appear homosexual based on a comment or action with no indended sexuality.
From the ridiculous assumption that popular cartoon character Sponge Bob is gay; as decried by James Dobson.
If one straight guy tells another that his pants look good - he's spongebobbing.