look up any word, like porb:
 
2.
A fun filled Trip in which theres a pool, free food, a bar, and a fuck load of old people. I mean too many.
Yo, i was on the cruisline the otherday, i did it with 80% of the women, hell they were all over 80.
by matt ward February 17, 2004
 
1.
To "Cruise Line" is the act of pushing one's face in between two LARGE breasts, and rocking one's head from side to side very rapidly while making a vigorous, lip-vibrating "brrr" sound and in the process adding more power and more brr to the vibration due to the larger breast. It is recommend to use the "cruise line" on a girl with larger than a D-cup. Very close to motorboating just has to increase the scale of power.
"Did you see her rack, I just want to cruise line those puppies"
by thatguydiditagain March 16, 2011